function showmenu(){
	document.getElementById("searchmenu1").style.display="block";
 }

function showmenu_gl(){
	 var keyword=document.getElementById("headKeyword");
    if(keyword.value=="请输入关键字" || keyword.value==""){
    	alert("请输入关键字");
    	return false;	
    }
    window.open(encodeURI(encodeURI("showpage/search.jsp?type="+keyword.value+"")),"_blank")
}
function colsemenu_zw(){
    var keyword=document.getElementById("headKeyword");
    if(keyword.value=="请输入关键字" || keyword.value==""){
    	document.getElementById("searchmenu1").style.display="none";
    	alert("请输入关键字");
    	return false;	
    }
	search2.query.value =keyword.value; 
	search2.submit();
	document.getElementById("searchmenu1").style.display="none";
 }
 
function colsemenu_zl(){
    var keyword=document.getElementById("headKeyword");
    if(keyword.value=="请输入关键字" || keyword.value==""){
    	document.getElementById("searchmenu1").style.display="none";
    	alert("请输入关键字");
    	return false;	
    }
	window.open(encodeURI(encodeURI("showpage/search.jsp?type="+keyword.value+"")),"_blank")
	document.getElementById("searchmenu1").style.display="none";
 }
 
function loginlt(){
  var username=document.login.username.value;
  if(username==""){
  	window.open("http://www.nblr.gov.cn/Helloer/index.jsp","_blank")
  }else{
      document.login.submit();
  }
 }