// JavaScript Document
function $(id)
{
	return document.getElementById(id);	
}

function echo(obj,html)
{
	$(obj).innerHTML=html;
}
function echo2(obj,html)
{
	$(obj).value=html;
}
function createxmlhttp()
{
	
	var xmlhttp=false;
if(window.XMLHttpRequest)
 {
  var xmlhttp = new XMLHttpRequest();
 } 
 else 
 {
  var MSXML = ['Microsoft.XMLHTTP', 'MSXML2.XMLHTTP.5.0', 'MSXML2.XMLHTTP.4.0', 'MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP'];
  for(var n = 0; n < MSXML.length; n++)
  {
   try
   {
    var xmlhttp = new ActiveXObject(MSXML[n]);        
    break;
   }
   catch(e)
   {
   }
  }
 } 
 
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
  		xmlhttp = new XMLHttpRequest();
				if (xmlhttp.overrideMimeType) {//设置MiME类别
			xmlhttp.overrideMimeType('text/xml');
		}
	}	

	return xmlhttp;	
}

function getdata(url,obj1,obj2)
//obj1为稍等对象id，obj2为显示数据对象id
{
		var xmlhttp=createxmlhttp();
		if(!xmlhttp)
		{
			alert("你的浏览器不支持XMLHTTP！！");
			return;
		}
		xmlhttp.onreadystatechange=requestdata;
		xmlhttp.open("Post",url,true);		
		xmlhttp.setRequestHeader("Content-Type", "text/xml"); 
		xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); 

		xmlhttp.send(null);
		function requestdata()
		{
			
				echo(obj1," 正在加载数据，请稍等......");
				if(xmlhttp.readyState==4)
				{
					if(xmlhttp.status==200)
					{
						
						var yy = unescape(xmlhttp.responseText);
						//alert(yy);
						document.getElementById(obj2).innerHTML=yy;
						//echo(obj2,yy);
						
					}
				}
			
		}
}