var HOMEPAGE_COOKIE = "HomePageIntro";

$(document).addEvent('domready', function() {
  var tiles = $$('#mainContent li');
  var i = 0;
  while (i < tiles.length-4) {
  /*while (i < tiles.length-4) { */
    var ran = tiles.getRandom();
    if(ran == document.getElementById(0)) {
       ran = document.getElementById(2);
    }
    if (ran.getStyle('display')!='none'){
      ran.setStyle('display','none');
      i++;
    }
  }
});

function openRedTagPopup(){
  myRef = window.open('http://www.gm.com/redtag/redtag.do?brandId=bu&amp;src=hom', '', 'width=830,height=550,toolbar=0,resizable=0,scrollbars=0');
}

function createIntroCookie(){
  var value= readCookie(HOMEPAGE_COOKIE);
  if (value == null)
    createCookie(HOMEPAGE_COOKIE, 'true', 10);
}

function showRollover(image){
  var obj= document.getElementById('rolloverImg');
  obj.className= "rollover"+image;
}

function currentOffer(year, brand, evar, evar24){
	var zipLoc = mrm.cmp.zc.getLocation();
	var tempLink = "";
	if(year!=null&&year!="") tempLink += "&year="+year;
	if(brand!=null&&brand!="") tempLink += "&brand="+brand;
	if(evar!=null&&evar!="") tempLink += "&evar2="+evar;
	if(evar24!=null&&evar24!="") tempLink += "&evar24="+evar24;
	if(null!=zipLoc){
		window.location.href=BASE_CONTEXT+"/tools/currentoffers/results.do?zipCode="+zipLoc.zipcode+"&region="+zipLoc.region.code+"&county="+zipLoc.county.code+tempLink;
	}else{
		if(tempLink!=""){
			window.location.href=BASE_CONTEXT+"/tools/currentoffers/results.do?"+tempLink+"&zipCode=";
		}else{
			window.location.href=BASE_CONTEXT+"/tools/currentoffers/results.do?zipCode=";
		}
	}
}