/*搜索按钮*/
if($("search_ipt")){
	$("search_ipt").onfocus=function (){this.value="";this.style.color="#333333";}
	$("search_ipt").onblur=function (){if(this.value==""){this.value="请输入关键字";this.style.color="#999";}}
}

if($("search_btn")){
	$("search_btn").onclick=function (){
		if($("search_ipt").value=="" || $("search_ipt").value=="请输入关键字"){alert("请填写关键字!");$("search_ipt").focus();return false;}
	}
}