<!-- Merci à www.volvospy.com pour une bonne partie du code -->
function decs(input) {
	var num=input;
	return(Math.round(num*10000)/10000);
}
function metUS2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.usmetric.selectedIndex == 0) {
		if (form.eumetric.selectedIndex == 0) {
			form.eumet.value=decs(parseFloat(form.usmet.value , 10)*1.609344);
		}
		if (form.eumetric.selectedIndex == 1) {
			form.eumet.value=decs(parseFloat(form.usmet.value , 10)*1609.344);
		}
		if (form.eumetric.selectedIndex == 2) {
			form.eumet.value=decs(parseFloat(form.usmet.value , 10)*1609344);
		}
	 }
	if (form.usmetric.selectedIndex == 1) {
		if (form.eumetric.selectedIndex == 0) { 
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*0.0009144);
		 }
		if (form.eumetric.selectedIndex == 1) { 
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*0.9144);
		}
		if (form.eumetric.selectedIndex == 2) { 
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*914.4);
		}
	}
	if (form.usmetric.selectedIndex == 2) {
		if (form.eumetric.selectedIndex == 0) { 
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*0.0003048);
		}
		if (form.eumetric.selectedIndex == 1) { 
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*0.3048);
		 }
		if (form.eumetric.selectedIndex == 2) { 
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*304.8);
		}
	}
	if (form.usmetric.selectedIndex == 3) {
		if (form.eumetric.selectedIndex == 0) {
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*0.0000254);
		}
		if (form.eumetric.selectedIndex == 1) { 
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*0.0254);
		}
		if (form.eumetric.selectedIndex == 2) { 
			form.eumet.value=decs((parseFloat(form.usmet.value , 10))*25.4);
		}
	}
return (message);
}

function metSI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.eumetric.selectedIndex == 0) {
		if (form.usmetric.selectedIndex == 0) {
			form.usmet.value=decs((parseFloat(form.eumet.value , 10))/1.609344);
		}
		if (form.usmetric.selectedIndex == 1) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/0.000914);
		}
		if (form.usmetric.selectedIndex == 2) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/0.0003048);
		}
		if (form.usmetric.selectedIndex == 3) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/0.0000254);
		}
	}
	if (form.eumetric.selectedIndex == 1) {
		if (form.usmetric.selectedIndex == 0) {
			form.usmet.value=decs((parseFloat(form.eumet.value , 10))/1609.344);
		}
		if (form.usmetric.selectedIndex == 1) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/0.9144);
		}
		
		if (form.usmetric.selectedIndex == 2) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/0.3048);
		}
		if (form.usmetric.selectedIndex == 3) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/0.0254);
		}
	}
	if (form.eumetric.selectedIndex == 2) {
		if (form.usmetric.selectedIndex == 0) {
			form.usmet.value=decs((parseFloat(form.eumet.value , 10))/1609344);
		}
		if (form.usmetric.selectedIndex == 1) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/914.4);
		}
		
		if (form.usmetric.selectedIndex == 2) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/304.8);
		}
		if (form.usmetric.selectedIndex == 3) {
			form.usmet.value=decs((parseFloat(form.eumet.value, 10))/25.4);
		}
	}
return (message);
}

function volumeUS2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.usv.selectedIndex == 0) {
		if (form.euv.selectedIndex == 0) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*3.7854);
		}
		if (form.euv.selectedIndex == 1) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*37.854);
		}
		if (form.euv.selectedIndex == 2) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*378.54);
		}
		if (form.euv.selectedIndex == 3) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*3785.4);
		}
	}
		if (form.usv.selectedIndex == 1) {
		if (form.euv.selectedIndex == 0) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*4.5461);
		}
		if (form.euv.selectedIndex == 1) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*45.461);
		}
		if (form.euv.selectedIndex == 2) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*454.61);
		}
		if (form.euv.selectedIndex == 3) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*4546.1);
		}
	}
		if (form.usv.selectedIndex == 2) {
		if (form.euv.selectedIndex == 0) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*28.32);
		}
		if (form.euv.selectedIndex == 1) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*283.2);
		}
		if (form.euv.selectedIndex == 2) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*2832);
		}
		if (form.euv.selectedIndex == 3) {
			form.euvolume.value=decs(parseFloat(form.usvolume.value , 10)*28320);
		}
	}
return (message);
}

function volumeSI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.euv.selectedIndex == 0) {
		if (form.usv.selectedIndex == 0) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/3.7854);
		}
		if (form.usv.selectedIndex == 1) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/4.5461);
		}
		if (form.usv.selectedIndex == 2) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/28.32);
		}
	}
		if (form.euv.selectedIndex == 1) {
		if (form.usv.selectedIndex == 0) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/37.854);
		}
		if (form.usv.selectedIndex == 1) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/45.461);
		}
		if (form.usv.selectedIndex == 2) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/283.2);
		}
	}
		if (form.euv.selectedIndex == 2) {
		if (form.usv.selectedIndex == 0) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/378.54);
		}
		if (form.usv.selectedIndex == 1) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/454.61);
		}
		if (form.usv.selectedIndex == 2) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/2832);
		}
	}
		if (form.euv.selectedIndex == 3) {
		if (form.usv.selectedIndex == 0) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/3785.4);
		}
		if (form.usv.selectedIndex == 1) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/4546.1);
		}
		if (form.usv.selectedIndex == 2) {
			form.usvolume.value=decs(parseFloat(form.euvolume.value , 10)/28320);
		}
	}
return (message);
}

function volume2US2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.usv2.selectedIndex == 0) {
		if (form.euv2.selectedIndex == 0) {
			form.euvolume2.value=decs(parseFloat(form.usvolume2.value , 10)*16.39);
		}
		}
return (message);
}

function volume2SI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.euv2.selectedIndex == 0) {
		if (form.usv2.selectedIndex == 0) {
			form.usvolume2.value=decs(parseFloat(form.euvolume2.value , 10)/16.39);
		}
		}
return (message);
}

function surfaceUS2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.ussur.selectedIndex == 0) {
		if (form.eusur.selectedIndex == 0) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*2.590);
		}
		if (form.eusur.selectedIndex == 1) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*259);
		}
		if (form.eusur.selectedIndex == 2) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*2590000);
		}
		if (form.eusur.selectedIndex == 3) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*25900000000);
		}
	}
		if (form.ussur.selectedIndex == 1) {
		if (form.eusur.selectedIndex == 0) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/247);
		}
		if (form.eusur.selectedIndex == 1) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*0.4047);
		}
		if (form.eusur.selectedIndex == 2) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*4047);
		}
		if (form.eusur.selectedIndex == 3) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*40470000);
		}
	}
		if (form.ussur.selectedIndex == 2) {
		if (form.eusur.selectedIndex == 0) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/1196000);
		}
		if (form.eusur.selectedIndex == 1) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/11960);
		}
		if (form.eusur.selectedIndex == 2) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/1.196);
		}
		if (form.eusur.selectedIndex == 3) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*28320);
		}
	}
		if (form.ussur.selectedIndex == 3) {
		if (form.eusur.selectedIndex == 0) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/10764200);
		}
		if (form.eusur.selectedIndex == 1) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/107642);
		}
		if (form.eusur.selectedIndex == 2) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*0.0929);
		}
		if (form.eusur.selectedIndex == 3) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*28320);
		}
	}
		if (form.ussur.selectedIndex == 4) {
		if (form.eusur.selectedIndex == 0) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/1550000000);
		}
		if (form.eusur.selectedIndex == 1) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/15500000);
		}
		if (form.eusur.selectedIndex == 2) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)/1550);
		}
		if (form.eusur.selectedIndex == 3) {
			form.eusurface.value=decs(parseFloat(form.ussurface.value , 10)*6.4516);
		}
	}
return (message);
}

function surfaceSI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.eusur.selectedIndex == 0) {
		if (form.ussur.selectedIndex == 0) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*0.3861);
		}
		if (form.ussur.selectedIndex == 1) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*247.1);
		}
		if (form.ussur.selectedIndex == 2) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*1195990);
		}
		if (form.ussur.selectedIndex == 3) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*10763910);
		}
		if (form.ussur.selectedIndex == 4) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*1550003100);
		}
	}
		if (form.eusur.selectedIndex == 1) {
		if (form.ussur.selectedIndex == 0) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*0.003861);
		}
		if (form.ussur.selectedIndex == 1) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*2.471);
		}
		if (form.ussur.selectedIndex == 2) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*11959.90);
		}
		if (form.ussur.selectedIndex == 3) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*107639.10);
		}
		if (form.ussur.selectedIndex == 4) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*15500031);
		}
	}
		if (form.eusur.selectedIndex == 2) {
		if (form.ussur.selectedIndex == 0) {
			form.ussurfacee.value=decs(parseFloat(form.eusurface.value , 10)/2590002);
		}
		if (form.ussur.selectedIndex == 1) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)/4047);
		}
		if (form.ussur.selectedIndex == 2) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*1.1960);
		}
		if (form.ussur.selectedIndex == 3) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*10.7639);
		}
		if (form.ussur.selectedIndex == 4) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*1550.0031);
		}
	}
		if (form.eusur.selectedIndex == 3) {
		if (form.ussur.selectedIndex == 0) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)/259.0002);
		}
		if (form.ussur.selectedIndex == 1) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)/40470000);
		}
		if (form.ussur.selectedIndex == 2) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)/5102.04);
		}
		if (form.ussur.selectedIndex == 3) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)/929.031);
		}
		if (form.ussur.selectedIndex == 4) {
			form.ussurface.value=decs(parseFloat(form.eusurface.value , 10)*0.1550);
		}
	}
return (message);
}


function vmUS2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.usvms.selectedIndex == 0) {
		if (form.euvms.selectedIndex == 0) {
			form.euvm.value=decs(parseFloat(form.usvm.value , 10)*3.7854/1.609344);
		}
		}
		if (form.usvms.selectedIndex == 1) {
		if (form.euvms.selectedIndex == 0) {
			form.euvm.value=decs(parseFloat(form.usvm.value , 10)*4.5461/1.609344);
		}
		}
return (message);
}

function vmSI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.euvms.selectedIndex == 0) {
		if (form.usvms.selectedIndex == 0) {
			form.usvm.value=decs(parseFloat(form.euvm.value , 10)/3.7854*1.609344);
		}
		if (form.usvms.selectedIndex == 1) {
			form.usvm.value=decs(parseFloat(form.euvm.value , 10)/4.5461*1.609344);
		}
   	}
return (message);
}

function mvUS2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.usmvs.selectedIndex == 0) {
		if (form.eumvs.selectedIndex == 0) {
			form.eumv.value=decs(parseFloat(form.usmv.value , 10)/3.7854*1.609344);
		}
		}
		if (form.usmvs.selectedIndex == 1) {
		if (form.eumvs.selectedIndex == 0) {
			form.eumv.value=decs(parseFloat(form.usmv.value , 10)/4.5461*1.609344);
		}
		}
return (message);
}

function mvSI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.eumvs.selectedIndex == 0) {
		if (form.usmvs.selectedIndex == 0) {
			form.usmv.value=decs(parseFloat(form.eumv.value , 10)*3.7854/1.609344);
		}
		if (form.usmvs.selectedIndex == 1) {
			form.usmv.value=decs(parseFloat(form.eumv.value , 10)*4.5461/1.609344);
		}
   	}
return (message);
}

function mvvmUS2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.usmvvms.selectedIndex == 0) {
		if (form.eumvvms.selectedIndex == 0) {
			form.eumvvm.value=decs( 100 / (parseFloat(form.usmvvm.value , 10)/3.7854*1.609344));
		}
		}
		if (form.usmvvms.selectedIndex == 1) {
		if (form.eumvvms.selectedIndex == 0) {
			form.eumvvm.value=decs(100 / (parseFloat(form.usmvvm.value , 10)/4.5461*1.609344));
		}
		}
return (message);
}

function mvvmSI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.eumvvms.selectedIndex == 0) {
		if (form.usmvvms.selectedIndex == 0) {
			form.usmvvm.value=decs((100/parseFloat(form.eumvvm.value , 10))*3.7854/1.609344);
		}
		if (form.usmvvms.selectedIndex == 1) {
			form.usmvvm.value=decs((100/parseFloat(form.eumvvm.value , 10))*4.5461/1.609344);
		}
   	}
return (message);
}

function khUS2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.uskhs.selectedIndex == 0) {
		if (form.eukhs.selectedIndex == 0) {
			form.eukh.value=decs(parseFloat(form.uskh.value , 10)/0.746);
		}
		}
return (message);
}

function khSI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.eukhs.selectedIndex == 0) {
		if (form.uskhs.selectedIndex == 0) {
			form.uskh.value=decs(parseFloat(form.eukh.value , 10)*0.746);
		}
   	}
return (message);
}

function pokiUS2SI(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.uspounds.selectedIndex == 0) {
		if (form.eukgs.selectedIndex == 0) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*0.9072);
		}
		if (form.eukgs.selectedIndex == 1) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*907.2);
		}
		if (form.eukgs.selectedIndex == 2) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*907200);
		}
	}
		if (form.uspounds.selectedIndex == 1) {
		if (form.eukgs.selectedIndex == 0) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*1.016);
		}
		if (form.eukgs.selectedIndex == 1) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*1016);
		}
		if (form.eukgs.selectedIndex == 2) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*1016000);
		}
	}
		if (form.uspounds.selectedIndex == 2) {
		if (form.eukgs.selectedIndex == 0) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)/2204.58);
		}
		if (form.eukgs.selectedIndex == 1) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*0.4536);
		}
		if (form.eukgs.selectedIndex == 2) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*453.6);
		}
	}
		if (form.uspounds.selectedIndex == 3) {
		if (form.eukgs.selectedIndex == 0) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)/35275);
		}
		if (form.eukgs.selectedIndex == 1) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)/35.275);
		}
		if (form.eukgs.selectedIndex == 2) {
			form.eukg.value=decs(parseFloat(form.uspound.value , 10)*28.349);
		}
	}
return (message);
}

function pokiSI2US(input) {
	var form=input.form;
	if (input.value.length == 0) {
		input.value="";
		return("")
	}
	var message="";
		if (form.eukgs.selectedIndex == 0) {
		if (form.uspounds.selectedIndex == 0) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)*1.1023);
		}
		if (form.uspounds.selectedIndex == 1) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)*0.9842);
		}
		if (form.uspounds.selectedIndex == 2) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)*2204.6);
		}
		if (form.uspounds.selectedIndex == 3) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)*35275);
		}
	}
		if (form.eukgs.selectedIndex == 1) {
		if (form.uspounds.selectedIndex == 0) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)/907);
		}
		if (form.uspounds.selectedIndex == 1) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)/1016);
		}
		if (form.uspounds.selectedIndex == 2) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)*2.2046);
		}
		if (form.uspounds.selectedIndex == 3) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)*35.3);
		}
	}
		if (form.eukgs.selectedIndex == 2) {
		if (form.uspounds.selectedIndex == 0) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)/907000);
		}
		if (form.uspounds.selectedIndex == 1) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)/1016000);
		}
		if (form.uspounds.selectedIndex == 2) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)/453.6);
		}
		if (form.uspounds.selectedIndex == 3) {
			form.uspound.value=decs(parseFloat(form.eukg.value , 10)/28.349);
		}
	}
return (message);
}

function gradec2gradef(input) {
	var form = input.form;
	if (input.value.length == 0) 	{
		input.value = "";
		return ("");
	}
	var message = "";
	if (form.gradecs.selectedIndex == 0) {
		if (form.gradefs.selectedIndex == 0) {
			form.gradef.value = decs((212-32)/100 * parseFloat(form.gradec.value,10) + 32);
		}
	}
	return (message);
}

function gradef2gradec(input) {
	var form = input.form;
	if (input.value.length == 0) 	{
		input.value = "";
		return ("");
	}
	var message = "";
	if (form.gradefs.selectedIndex == 0) {
		if (form.gradecs.selectedIndex == 0) {
			form.gradec.value = decs(100/(212-32) * (parseFloat(form.gradef.value,10) - 32));
		}
	}
	return (message);
}
function nm2lbft(input) {
	var form = input.form;
	if (input.value.length == 0) 	{
		input.value = "";
		return ("");
	}
	var message = "";
	if (form.nms.selectedIndex == 0) {
		if (form.lbfts.selectedIndex == 0) {
			form.lbft.value = decs(parseFloat(form.nm.value,10) * 0.736);
		}
	}
	return (message);
}

function lbft2nm(input) {
	var form = input.form;
	if (input.value.length == 0) 	{
		input.value = "";
		return ("");
	}
	var message = "";
	if (form.lbfts.selectedIndex == 0) {
		if (form.nms.selectedIndex == 0) {
			form.nm.value = decs(parseFloat(form.lbft.value,10) / 0.736);
		}
	}
	return (message);
}