function Slink(i){
	url=new Array(); //¶¨Òå¶ÔÏó 
	url[1]="product.asp"; //mid
	url[2]="product.asp?classid=3"; //3
	url[3]="product.asp?classid=1"; //2
	url[4]="product.asp?classid=2";//1 
	location.href = url[i];
}