function search()
        {
        	try
        	{
	            var key = document.getElementById("tbKey");
	            if(key.value == "")
	            {
	                alert("请输入要搜索的关键字");
	                key.focus();
	            }
	            else
	            {
	                top.location = "productList.aspx?kw=" + key.value;
	            }
	            return false;


	            //得到下拉框的值
//	            var ddlClass1 = document.getElementById("selBigClass");
//	            var dllClass1Sel = ddlClass1.options[ddlClass1.selectedIndex].value;
//	            
//	            top.location = "productList.aspx?kw=" + key.value+"&BigClassId="+dllClass1Sel.value;

	        }
	        catch(e){}
        }