var aImgPreloader = new Array;

var urlRoot="layout/";
aImgPreloader[aImgPreloader.length] = new Array('biography',urlRoot+'int_bio.gif',urlRoot+'int_bio_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('portfolio',urlRoot+'int_port.gif',urlRoot+'int_port_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('galleries',urlRoot+'int_gall.gif',urlRoot+'int_gall_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('programs',urlRoot+'int_pro.gif',urlRoot+'int_pro_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('news',urlRoot+'int_news.gif',urlRoot+'int_news_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('contact',urlRoot+'int_cont.gif',urlRoot+'int_cont_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('home',urlRoot+'int_home.gif',urlRoot+'int_home_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('biographyHOME',urlRoot+'home_bio.gif',urlRoot+'home_bio_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('portfolioHOME',urlRoot+'home_port.gif',urlRoot+'home_port_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('galleriesHOME',urlRoot+'home_gall.gif',urlRoot+'home_gall_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('programsHOME',urlRoot+'home_pro.gif',urlRoot+'home_pro_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('showingHOME',urlRoot+'home_showing.gif',urlRoot+'home_showing_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('contactHOME',urlRoot+'home_cont.gif',urlRoot+'home_cont_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('homeHOME',urlRoot+'home_home.gif',urlRoot+'home_home_mo.gif');

// load up image container object based on previous array
var oImgContainer = new Object;
for(i=0;i<aImgPreloader.length;i++){
	if(document.images){
		oImgContainer[aImgPreloader[i][0]] = new Image;
		oImgContainer[aImgPreloader[i][0]].src = aImgPreloader[i][1];
		oImgContainer[aImgPreloader[i][0] + 'On'] = new Image;
		oImgContainer[aImgPreloader[i][0] + 'On'].src = aImgPreloader[i][2];
	}
}

// rollover function
// image name (sImg) corresponds with aImgPreloader and name attribute of tag
function roll(sImg,bOver){
	if(document.images){
		if (bOver) {
			document.images[sImg].src = oImgContainer[sImg + 'On'].src;
		} else {
			document.images[sImg].src = oImgContainer[sImg].src;


		}
	}
}