// JavaScript Document
function search_click(){

	if (document.getElementById("search-input").value==""){
	document.getElementById("search-input").value="请输入关键字";
	return false;
	}
	
	if (document.getElementById("search-input").value == '请输入关键字') {
		  document.getElementById("search-input").focus();
		  document.getElementById("search-input").value='';
  		return false;
  }
	document.frm.submit();

}

function clearTxt (id) {
  if (
  document.getElementById("search-input").value == "请输入关键字")
    document.getElementById("search-input").value="" ;
  return ;
}