//搜索框
	function checkLogin(userName,n) {
		if (n == 0 && userName.value == "在这里输入成语"){userName.value="";userName.style.cssText = "color: #CC3300;";}
		if (n == 1){
			if(userName.value =="在这里输入成语"){userName.value="";}
			userName.style.cssText = "color: #CC3300;";
		}
		if (n == 2 && userName.value == ""){userName.value = "在这里输入成语";userName.style.cssText = "color: #CC3300;";}
		if (n == 3){
			if(userName.value != ""){userName.value="";}
			userName.style.cssText = "color: #CC3300;";
		}
	}