userAgent = window.navigator.userAgent;
browserVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);
function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function findElement(n,ly) {
	if (browserVers < 4)		return document[n];
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (!elem) {
		for (var i=0;i<curDoc.layers.length;i++) {
			elem = findElement(n,curDoc.layers[i]);
			if (elem) return elem;
		}
	}
	return elem;
}

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

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		topnav_portfolio_over = newImage("images/topnav_portfolio-over.gif");
		topnav_roliving_over = newImage("images/topnav_roliving-over.gif");
		topnav_clientlist_over = newImage("images/topnav_clientlist-over.gif");
		topnav_contact_over = newImage("images/topnav_contact-over.gif");
		topnav_capabilities_over = newImage("images/topnav_capabilities-over.gif");
		topnav_clientaccess_over = newImage("images/topnav_clientaccess-over.gif");		
		button_3dportfolio_over = 
		newImage("images/buton_3d_portfolio-over.gif");
		button_back_over = 
		newImage("images/button_back-over.gif");		
		button_next_over = 
		newImage("images/button_next-over.gif");
		butt2d_over = 	
		newImage("images/button_mainport_2d-over.gif");
		butt3d_over = 	
		newImage("images/button_mainport_3d-over.gif");		
		email_over = 	
		newImage("images/contact_email_button-over.gif");		
		map_over = 	
		newImage("images/contact_map_button-over.gif");			
		
		preloadFlag = true;
	}
}

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 submitTheForm(objName) {
	theForm = MM_findObj(objName);
	theForm.submit();
	return true;
}

window.onload = preloadImages;