var siteID    = new Array();
var bannerURL = new Array();
var bannerIMG = new Array();

function objHandle(id)
{
	if (document.getElementById)
	{
		this.obj = document.getElementById(id);
		this.style = document.getElementById(id).style;
	}
	else if (document.all)
	{
		this.obj = document.all[id];
		this.style = document.all[id].style;
	}
	else if (document.layers)
	{
		this.obj = document.layers[id];
		this.style = document.layers[id];
	}
}

function preloadBanners()
{
	for(var i=1; i<bannerURL.length; i++)
	{
		bannerIMG[i] = new Image();
		bannerIMG[i].src = bannerURL[i];
	}
	bannerIMG[0] = new Image();
	bannerIMG[0].src = bannerURL[0];
}

function setBanner(elementID, SID)
{
	hobj = new objHandle(elementID);
	if (typeof(hobj.obj) == "object")
	{
		var n = 0;
		for(var i=1; i<siteID.length; i++)
		{
			if(siteID[i] == SID)
			{
				n = i;
				break;
			}
		}
		hobj.obj.src = bannerURL[n];
	}
}