var top_image = "";
function set_transition() {
	var i = 0;
	for (i=0;i<=category_color.length-1;i++) {
		document.getElementById(category_color[i]).className='trans50';
	}
}
function change_image(src_image) {
	top_image = document["product_image"].src;
	document["product_image"].src = src_image;
	 document.body.style.cursor = 'pointer';
}
function restore_image() {
	document["product_image"].src=top_image;
	 document.body.style.cursor = 'default';
}