Image1= new Image(850,150);
Image1.src = "../images/PD-header.gif";

Image2 = new Image(850,510);
Image2.src = "../images/PD-background.gif";

Image3 = new Image(540,510);
Image3.src = "../images/PD-bglogo.gif";

Image4 = new Image(850,50);
Image4.src = "../images/PD-footer.gif";

sfHover = function() 
{
	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"), ""); }
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);

/*
function hide(aLayer) 
{	
	if (document.all) { document.all[aLayer].style.visibility="hidden"; }
	else if (document.layers) { document.layers[aLayer].visibility="hide"; }
	else { document.getElementById(aLayer).style.visibility="hidden"; }	
}
        
function show(aLayer) 
{
	if (document.all) { document.all[aLayer].style.visibility="visible"; }
	else if (document.layers) { document.layers[aLayer].visibility="show"; }
	else { document.getElementById(aLayer).style.visibility="visible"; }	
}

function doFor(aLayerID){
	hide('layer1');
	hide('layer2');
	hide('layer3');
	hide('layer4');
	hide('layer5');
	hide('layer6');
	hide('layer7');
	hide('layer8');
	hide('layer9');
	hide('layer10');
	hide('layer11');
	hide('layer12');
	hide('layer13');
	hide('layer21');
	hide('layer22');
	hide('layer14');
	hide('layer15');
	hide('layer16');
	hide('layer17');
	hide('layer18');
	hide('layer19');
	hide('layer20');
	eval("show('layer"+aLayerID+"')");
}
*/