var aImgPreloader = new Array;

var urlRoot="../images/wrpr/";
aImgPreloader[aImgPreloader.length] = new Array('home',urlRoot+'menu_home.gif',urlRoot+'menu_home_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('programming',urlRoot+'menu_programming.gif',urlRoot+'menu_programming_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('support',urlRoot+'menu_support.gif',urlRoot+'menu_support_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('shop15',urlRoot+'menu_shop15.gif',urlRoot+'menu_shop15_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('calendar',urlRoot+'menu_calendar.gif',urlRoot+'menu_calendar_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('resources',urlRoot+'menu_resources.gif',urlRoot+'menu_resources_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('education',urlRoot+'menu_education.gif',urlRoot+'menu_education_mo.gif');
aImgPreloader[aImgPreloader.length] = new Array('aboutus',urlRoot+'menu_aboutus.gif',urlRoot+'menu_aboutus_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;


		}
	}
}