<!-- hide script from old browsers
//Made by Vijay Bhagwandas, Lenntech BV
function processflow()
{
	var a = document.converse.flow1.value //m3/h
	var b = document.converse.flow2.value //l/h
	var c = document.converse.flow3.value //cfm
	var d = document.converse.flow4.value //gpm
	var e = document.converse.temp1.value //C
	var f = document.converse.temp2.value //K
	var g = document.converse.D1.value //cm
	var h = document.converse.D2.value //in
	var i = document.converse.D3.value //ft
	var j = document.converse.A1.value //cm2
	var k = document.converse.A2.value //m2
	var l = document.converse.A3.value //in2
	var m = document.converse.A4.value //ft2
	var n = document.converse.pres1.value //barr
	var o = document.converse.pres2.value //psi
	var value1 = document.converse.D
	var D = value1.options[value1.selectedIndex].value
	
	if(a != "")
	{
		document.converse.flow1.value = (a*1).toPrecision(D)
		document.converse.flow2.value = (a*1000).toPrecision(D)
		document.converse.flow3.value = (a*0.588577779).toPrecision(D)
		document.converse.flow4.value = (a*6340.12897).toPrecision(D)
	}
	if(b != "")
	{
		document.converse.flow1.value = (b/1000).toPrecision(D)
		document.converse.flow2.value = (b*1).toPrecision(D)
		document.converse.flow3.value = (b*0.000588577779).toPrecision(D)
		document.converse.flow4.value = (b*6.34012897).toPrecision(D)
	}
	if(c != "")
	{
		document.converse.flow1.value = (c/0.588577779).toPrecision(D)
		document.converse.flow2.value = (c/0.000588577779).toPrecision(D)
		document.converse.flow3.value = (c*1).toPrecision(D)
		document.converse.flow4.value = (c/0.0000928337234).toPrecision(D)
	}
	if(d != "")
	{
		document.converse.flow1.value = (d/6340.12897).toPrecision(D)
		document.converse.flow2.value = (d/6.34012897).toPrecision(D)
		document.converse.flow3.value = (d*0.0000928337234).toPrecision(D)
		document.converse.flow4.value = (d*1).toPrecision(D)
	}
	if(e != "")
	{
		document.converse.temp1.value = (e*1).toPrecision(D)
		document.converse.temp2.value = (9/5*e+32).toPrecision(D)
	}
	if(f != "")
	{
		document.converse.temp1.value = (5/9*(f*1-32)).toPrecision(D)
		document.converse.temp2.value = (f*1).toPrecision(D)
	}
	if(g != "")
	{
		document.converse.D1.value = (g*1).toPrecision(D)
		document.converse.D2.value = (g/2.54).toPrecision(D)
		document.converse.D3.value = (g*3.282e-2).toPrecision(D)
	}
	if(h != "")
	{
		document.converse.D1.value = (h*2.54).toPrecision(D)
		document.converse.D2.value = (h*1).toPrecision(D)
		document.converse.D3.value = (h/12).toPrecision(D)
	}
	if(i != "")
	{
		document.converse.D1.value = (i/3.282e-2).toPrecision(D)
		document.converse.D2.value = (i*12).toPrecision(D)
		document.converse.D3.value = (i*1).toPrecision(D)
	}
	if(j != "")
	{
		document.converse.A1.value = (j*1).toPrecision(D)
		document.converse.A2.value = (j/1e4).toPrecision(D)
		document.converse.A3.value = (j/6.452).toPrecision(D)
		document.converse.A4.value = (j/9.29e2).toPrecision(D)
	}
	if(k != "")
	{
		document.converse.A1.value = (k*1e4).toPrecision(D)
		document.converse.A2.value = (k*1).toPrecision(D)
		document.converse.A3.value = (k/6.452e-4).toPrecision(D)
		document.converse.A4.value = (k/9.29e-2).toPrecision(D)
	}
	if(l != "")
	{
		document.converse.A1.value = (l*6.452).toPrecision(D)
		document.converse.A2.value = (l*6.452e-4).toPrecision(D)
		document.converse.A3.value = (l*1).toPrecision(D)
		document.converse.A4.value = (l/144).toPrecision(D)
	}
	if(m != "")
	{
		document.converse.A1.value = (m*9.29e2).toPrecision(D)
		document.converse.A2.value = (m*9.29e-2).toPrecision(D)
		document.converse.A3.value = (m*144).toPrecision(D)
		document.converse.A4.value = (m*1).toPrecision(D)
	}
	if(n != "")
	{
		document.converse.pres1.value = (n*1).toPrecision(D)
		document.converse.pres2.value = (n/(1.01325/14.696)).toPrecision(D)
	}
	if(o != "")
	{
		document.converse.pres1.value = (o*(1.01325/14.696)).toPrecision(D)
		document.converse.pres2.value = (o*1).toPrecision(D)
	}
}

//met enter op de toetsenbord laten berekenen
document.onkeypress = keyhandler;
function keyhandler(e) {
	Key = (document.layers)?e.which:window.event.keyCode;;
	if( Key == 13 || Key == 32 ){ //13 is ascii value for Enter key 32 is space
		processflow(); //call your function here
	}

	//met escape de velden schoonmaken
	if( Key == 27){ //27 is ascii value for Escape key
		clearConverse(); //call your function here
	}
}	
// end hiding script from old browsers -->