function changeHeader(searchCategory){
//alert(searchCategory);
var obj = document.getElementById("HeaderImage");
if (searchCategory == 35 || searchCategory == 36)
{
var imagesArray = new Array();
for(var i=0; i<=6; i++)
{imagesArray[i] = "/images/banners/banner" + i + ".jpg";}
var randomnumber=Math.floor(Math.random()*7);
obj.src = imagesArray[randomnumber];

}
else if (searchCategory == 37 || searchCategory == 38 || searchCategory == 39 || searchCategory == 40)
{
var imagesArray = new Array();
for(var i=0; i<=2; i++)
{imagesArray[i] = "/images/banners/commercial/commercial_" + i + ".jpg";}
var randomnumber=Math.floor(Math.random()*3);
obj.src = imagesArray[randomnumber];
}
else
    obj.src = "/images/templateimages/header.jpg";
}