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) {
		accounting_o = newImage("images/services/accounting-o.gif");
		pfep_o = newImage("images/services/pfep-o.gif");
		busval_o = newImage("images/services/busval-o.gif");
		itc_o = newImage("images/services/itc-o.gif");
		data_o = newImage("images/services/data-o.gif");
		mcs_o = newImage("images/services/mcs-o.gif");
		litigation_o = newImage("images/services/litigation-o.gif");
		tax_o = newImage("images/services/tax-o.gif");
		ebp_o = newImage("images/services/ebp-o.gif");
		government_o = newImage("images/services/government-o.gif");
		marketing_o = newImage("images/services/marketing-o.gif");
		nonprofit_o = newImage("images/services/nonprofit-o.gif");
		hud_o = newImage("images/services/hud-o.gif");
		preloadFlag = true;
	}
}