function sfHover() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}

void function imageChange(ImageURL)
{
	image = document.getElementById("image1");
        image.src = ImageURL;
}

void function materials()
{
var menuInd = document.getElementById("material");
var chosenInd = menuInd.options[menuInd.selectedIndex].value;

if (chosenInd != '0')
	{
		popQty(chosenInd);
                changeImg(chosenInd);
	}
}

void function changeImg(img)
{
document.getElementById("mainimg").src = "http://site.desktopsupplies.com/images/" + img + ".gif";
}

void function popQty(material)
{

var dps = new Array('110', '1000');
var glb = new Array('10', '100', '250');
var cmp = new Array('25', '100', '250');

	switch(material)
	{
		case '62015W':
			printArray(dps);
			break;
		case '62015Y':
			printArray(dps);
			break;
		case '62015G':
			printArray(dps);
			break;
		case '62015B':
			printArray(dps);
			break;
		case '311207':
			printArray(cmp);
			break;
		case '311152':
			printArray(cmp);
			break;
		case '311106':
			printArray(cmp);
			break;
		case '311005':
			printArray(cmp);
			break;
		case '311051':
			printArray(cmp);
			break;
		default:
			printArray(glb);
			break;
        }
}

void function printArray(arrayName)
{
document.getElementById("quantity").options.length = 0;
document.getElementById("quantity").options[0] = new Option("(Select your Quantity)");
	aLength = arrayName.length;
	document.getElementById("quantity").options.length = 1;
var labels = 30;
	for(var i=1; i<=aLength; i++)
	{
		document.getElementById("quantity").options[i] = new Option(arrayName[i-1] + "  Sheets / " + arrayName[i-1]*labels + "  Labels", arrayName[i-1]);
	}
}

void function changeQty()
{
var matInd = document.getElementById("material");
var chosenMat = matInd.options[matInd.selectedIndex].value;

var qtyInd = document.getElementById("quantity");
var chosenQty = qtyInd.options[qtyInd.selectedIndex].value;

var id = chosenMat + "-" + chosenQty;

document.getElementById("oForm").action = "http://order.store.yahoo.net/cgi-bin/wg-order?dps+" + id;

}