function reload_product(obj)
{
	//var doc = window.document;
	//alert(obj.name);

	//alert(window.document.all["big_intro1"]);
	for(var i = 1;i < 6; i++)
	{
		if(window.document.all["big_intro"+i])
		{
			window.document.all["big_intro"+i].style.display = "none";
			window.document.all["small_intro"+i].style.display = "";
		}	
	}
	var big_name = obj.name.replace("small","big"); 	
	obj.style.display = "none";
	window.document.all[big_name].style.display = "";
	

}