var agt=navigator.userAgent.toLowerCase();
var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));

var sButtons = "left-highlight,middle-highlight,right-highlight";

/* Optimisations to orchestrate rendering. Tested under very slow connection */

var img1 = new Image(); img1.src = "images/top.gif";
var img2 = new Image(); img2.src = "images/gradient.png";
var img3 = new Image(); img3.src = "images/bottom.gif";
var img4 = new Image(); img4.src = "images/bars.gif";
var img5 = new Image(); img5.src = "images/divisor.gif";
var img6 = new Image(); img6.src = "images/left-button.gif";
var img7 = new Image(); img7.src = "images/right-button.gif";
var img8 = new Image(); img8.src = "images/middle-button.gif";

window.onload = start;

function start()
{
	if(is_ie)
	{
		htmlNAV(PAGE);
	}
	preloadGifs(sButtons);
	extras();
} 

function preloadImgs(sData,sExtension)
{
	var Data = sData.split(",");
	var iMax = Data.length;
	var Imgs = new Array(iMax);
	for(var i=0;i<iMax;i++)
	{
		if(Data[i]!=null)
		{
			Imgs[i]=new Image();
			Imgs[i].src="images/"+Data[i]+"."+sExtension;
		}
	}
}

function preloadGifs(sData) 
{
	preloadImgs(sData,"gif");
}

function preloadJPGs(sData) 
{
	preloadImgs(sData,"jpg");
}