function clearform(obj){
	if(obj.value == obj.defaultValue){
		obj.value = "";
	}
}

function setMenuHide(objid){
	var menudocument = document.getElementById(objid);
	var ul = menudocument.getElementsByTagName('ul');
	for(var no=0;no<ul.length;no++){
		//ul[no].style.display='none';
	}

}
function activeItemId(objid,id){
	var menudocument = document.getElementById(objid);
	var li = menudocument.getElementsByTagName('li');
	for(var no=0;no<li.length;no++){
		if(id == li[no].id){
			li[no].className = "active";
			var ul = li[no].getElementsByTagName('ul');
			if(ul[0] != null){
				ul[0].style.display='';
			}
			if(li[no].parentNode != null){
				activeItemId(objid,li[no].parentNode.parentNode.id);
			}
		}
	
	}
}
function getUrlParameter( name ){  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");  var regexS = "[\\?&]"+name+"=([^&#]*)";  var regex = new RegExp( regexS );  var results = regex.exec( window.location.href );  if( results == null )    return "";  else    return results[1];}

function Inint_AJAX() {
   try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {} //IE
   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} //IE
   try { return new XMLHttpRequest();          } catch(e) {} //Native Javascript
   alert("XMLHttpRequest not supported");
   return null;
};

function dochange(src, val) {
     var req = Inint_AJAX();
     req.onreadystatechange = function () { 
          if (req.readyState==4) {
               if (req.status==200) {
                    document.getElementById(src).innerHTML=req.responseText; //ÃѺ¤èÒ¡ÅѺÁÒ
               } 
          }
     };
     req.open("GET", val); //ÊÃéÒ§ connection
     req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8"); // set Header
     req.send(null); //Ê觤èÒ
}