function checkSr(){var keys =document.Gsearch.keyword.value;if (keys==""){alert('请输入关键字!');document.Gsearch.keyword.focus();return false;}}document.write("<form name=\"Gsearch\" id=\"Gsearch\" target=\"_mcsearch\" action=\"/search.aspx\" method=\"post\"  onSubmit=\"return checkSr();\">");document.write("<input class=\"sr keys\" name=\"keyword\" value=\"千里之外\" onFocus=\"this.select()\"  />");document.write("<select name=\"stype\" class=\"sl\">");document.write("<option value=\"Music\" selected>歌曲</option>");document.write("<option value=\"Special\">专辑</option>");document.write("<option value=\"Singer\">歌手</option>");document.write("</select>");document.write("<input  value=\"搜&nbsp;索\" type=\"submit\" class=\"ss\" />");document.write("</form>");