window.onload = init;

function init() {
	render_nav();
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		signin_regover = newImage("ui/signin_regover.gif");
		email_listover = newImage("ui/email_listover.gif");
		about_contactover = newImage("ui/about_contactover.gif");
		ui_homeover = newImage("ui/ui_homeover.gif");
		specs_pricingover = newImage("ui/specs_pricingover.gif");
		cd_collectionsover = newImage("ui/cd_collectionsover.gif");
		help_faqsover = newImage("ui/help_faqsover.gif");
		advanced_searchover = newImage("ui/advanced_searchover.gif");
		image_searchover = newImage("ui/image_searchover.gif");
		preloadFlag = true;
	}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

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_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
  return theWindow;
}

function go(where){ 
window.location.href=where; 
}

function update(form) {

	if(form.ship.value == 'Y') {

		form.ship.value = 'N';
		form.shiptoname.value = form.name.value;
		form.shiptoaddress1.value = form.address1.value;
		form.shiptoaddress2.value = form.address2.value;
		form.shiptocity.value = form.city.value;
		form.shiptostate.value = form.state.value;
		form.shiptozip.value = form.zip.value;
		form.shiptophone.value = form.phone.value;
		form.shiptoemail.value = form.email.value;
	}

	else {
		form.ship.value = 'Y';
		form.shiptoname.value = '';
		form.shiptoaddress1.value = '';
		form.shiptoaddress2.value = '';
		form.shiptocity.value = '';
		form.shiptostate.value = '';
		form.shiptozip.value = '';
		form.shiptophone.value = '';
		form.shiptoemail.value = '';
	}
}

function render_nav() { // Peter Wooley; 03/25/2007
	var nav = document.getElementById('header_nav');
	var navLength;
	
	if (nav)
		navLength = nav.childNodes.length;
	for(var i=0; i<navLength; i++) {
		var nav_item = nav.childNodes[i];
		if(nav_item.nodeName == "LI" && nav_item.childNodes[2]) {
			if(nav_item.childNodes[2].nodeName == "UL") {
				nav_item.onmouseover = function() {
					this.childNodes[2].style.display = "block";
				}
				nav_item.onmouseout = function() {
					this.childNodes[2].style.display = "none";
				}
			}
		}
	}
}