$(document).ready(function(){
//去除空格
String.prototype.Trim = function(){return this.replace(/(^\s*)|(\s*$)/g, "");} 
   
$("#keys").val("请输入关键字");
    document.getElementById("keys").style.color="#BEBEBE";
//查询
    $(".keysbutton").click(function(){
        if($("#keys").val()=="请输入关键字"){
            return false;
        }else if($("#keys").val().Trim()==""){
            return false;
        }else{
            window.location.href="Search.aspx?key="+encodeURIComponent($("#keys").val().Trim());
        }
    });
}); 


function cls()
{
	defaultValue="请输入关键字";
	value=document.getElementById('keys');
	if(value.value==defaultValue) {
		value.value="";
		document.getElementById('keys').style.color="#272727";
	}
}
function res()
{
	defaultValue="请输入关键字";
	value=document.getElementById('keys');
	if(value.value==""){ 
		value.value=defaultValue;
		document.getElementById('keys').style.color="#BEBEBE";
	}
}