function PreLoader(imageValue){
	//var location="/php/pp_dealer/images/";
	var location="dealer/images/";
	// extracting the all images name with there ID's					
	var imageSrc=imageValue.split(",");
	
	
    for(i=0;i<imageSrc.length;i++){
		// extracting each images ID and name and building the array
		var images=imageSrc[i].split(":");
		
		ImageSet[images[0]]=new ImageSet(images[1],location);
    }
}

function nbOver (img_name) {
	document.images["prod_img"].src = ImageSet[img_name].img_name.src;
	showDescription(img_name);
}

function nbOut () {	
	document.images["prod_img"].src = defaultImage.src;
	showDescription(defaultCat);
}

function ImageSet (img_name, loc) {
	img_str = loc + img_name;

	this.img_name = new Image ();
	this.img_name.src = img_str + "";
}