imageOffs = new Array();
imageOns = new Array();

//images array
imgArr=new Array;
imgArr["index"] = "/images/nav/home_on.gif";
imgArr["about"] = "/images/nav/aboutVisy_on.gif";
imgArr["corporate"] = "/images/nav/corporate_on.gif";
imgArr["products"] = "/images/nav/product_search_on.gif";
imgArr["news"] = "/images/nav/news_on.gif";
imgArr["community"] = "/images/nav/community_on.gif";
imgArr["environment"] = "/images/nav/environment_on.gif";
imgArr["students"] = "/images/nav/students_on.gif";
imgArr["careers"] = "/images/nav/careers_on.gif";

imgArr["recycling"] = "/images/second_nav/recycling_on.gif";
imgArr["paper_pulp"] = "/images/second_nav/pulpPaper_on.gif";
imgArr["specials"] = "/images/second_nav/specialties_on.gif";
imgArr["board"] = "/images/second_nav/board_on.gif";
imgArr["button1"] = "/images/second_nav/visypak_on.gif";
imgArr["industrial"] = "/images/second_nav/industrial_on.gif";
imgArr["automation"] = "/images/second_nav/automation_on.gif";
imgArr["services"] = "/images/second_nav/services_on.gif";

imgArr["food"] = "/images/second_nav/visypak_food_on.gif";
imgArr["beverage"] = "/images/second_nav/visypak_bev_on.gif";

var preloaded = 0	

function preLoad() {
	if(document.images) {
		//smalls
		for (var i in imgArr)   {
			//roll over imgs
			imageOns[i] = new Image();
			imageOns[i].src = imgArr[i];	
			//original imgs
			if (document.images[i]) {
				imageOffs[i] = new Image();
				imageOffs[i].src = document.images[i].src;
			}
		}

		preloaded = 1
	}
}	

function overImg(myImg) {
	if(document.images && preloaded) {	
		document.images[myImg].src = imageOns[myImg].src;		
	}
}
function outImg(myImg) {
	if(document.images && preloaded) {	
		document.images[myImg].src = imageOffs[myImg].src;
	}
}