function goShopBy(type){

       var f= document.f;
       var gourl = "/front/php/category.php?cate_no=";
       


       var doSubmit = false;
       if(type=="shopbygift"){
	  if( f.shopbygift.options[f.shopbygift.selectedIndex].value ==""){
		doSubmit = false;
	   }else{
             gourl = gourl + f.shopbygift.options[f.shopbygift.selectedIndex].value;
             doSubmit = true; 
	   }
       }else if(type=="shopbybrand"){
            if( f.shopbybrand.options[f.shopbybrand.selectedIndex].value ==""){
		doSubmit = false;
	     }else{
		     if(f.shopbybrand.options[f.shopbybrand.selectedIndex].value == "blik"){
		       gourl = "/front/php/gonggu/gonggu.php?main_cate_no=14"; 
		     }else{
		       gourl = gourl + f.shopbybrand.options[f.shopbybrand.selectedIndex].value;
		     }
		     doSubmit = true;
	     }

       }else if(type=="shopbystage"){
	     if( f.shopbystage.options[f.shopbystage.selectedIndex].value ==""){
		doSubmit = false;
	     }else{
              gourl = gourl + f.shopbystage.options[f.shopbystage.selectedIndex].value;   
              doSubmit = true;   
	      }
       }

      
       if(doSubmit){
		document.location.href =gourl;
        // f.action = gourl;
        // f.submit();
       }

}