<!--
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
  } if (errors) alert('The following error(s) occurred:\n'+errors);
  document.MM_returnValue = (errors == '');
}

function MM_callJS(jsStr) { //v2.0
  return eval(jsStr)
}

function ClearList() {
  for (var i=document.forms[1].lstResults.options.length-1; i>=0; i--){
    document.forms[1].lstResults.options[i] = null;
  }
  document.forms[1].lstResults.selectedIndex = -1;
}

function Calc_volume() {
	var intLength, intWidth, intHeight, intVolume, strUnit;

	//Get measurements
	intLength = document.forms[1].txtLength.value;
	intWidth = document.forms[1].txtWidth.value;
	intHeight = document.forms[1].txtHeight.value;

	//Get measurements unit
	for (var i=0; i<document.forms[1].rgrpUnit.length; i++)  {
		if (document.forms[1].rgrpUnit[i].checked)  {
			strUnit = document.forms[1].rgrpUnit[i].value
		}
	}

	//Convert to cm
	switch (strUnit) {
		case "inch":
			intLength = intLength * 2.54;
			intWidth = intWidth * 2.54;
			intHeight = intHeight * 2.54;
			break;
		case "ft":
			intLength = intLength * 30.48;
			intWidth = intWidth * 30.48;
			intHeight = intHeight * 30.48;
			break;
	}

	//Calculate volume
	intVolume = (intLength * intWidth * intHeight) / 1000

	//Get volume unit
	for (var i=0; i<document.forms[1].rgrpVolUnit.length; i++)  {
		if (document.forms[1].rgrpVolUnit[i].checked)  {
			strUnit = document.forms[1].rgrpVolUnit[i].value
		}
	}
	
	//Convert volume
	switch (strUnit) {
		case "litre":
			strUnit = " litres";
			break;
		case "usgallon":
			intVolume = intVolume * 0.264172051;
			strUnit = " gallon(US)";
			break;
		case "ukgallon":
			intVolume = intVolume * 0.219969157;
			strUnit = " gallon(UK)";
			break;
	}

	//Round off results
	intVolume = Math.floor(intVolume * 100) / 100;

	//Display results
	document.forms[1].txtVolume.value = intVolume + strUnit;
}

//-->