function getElementById(id)
{
	return document.getElementById(id);	
}

function getElementsByName(name)
{
	return document.getElementsByName(name);	
}

var t=new Object();

function show(){
	var obj1 = getElementById('blackscreen');
	var obj2 = getElementById('diagbox');
	obj1.style.visibility="visible";
	obj1.style.width=document.body.offsetWidth;
	obj1.style.height=document.body.offsetHeight;
	obj2.style.display='block';
	if(obj1.filters.alpha.opacity>25){
		obj1.filters.alpha.opacity=25;
		clearTimeout(t.timer1);
		return;
	}else{
		obj1.filters.alpha.opacity+=15;
		t.timer1=setTimeout("show()",5);
	}
	return;
}

function hide(){
	var obj1 = getElementById('blackscreen');
	var obj2 = getElementById('diagbox');
	if(obj1.filters.alpha.opacity<=0){
		obj1.filters.alpha.opacity=0;
		obj1.style.visibility="hidden";
		obj2.style.display='none';
		clearTimeout(t.timer2);
		return;
	}else{
		obj1.filters.alpha.opacity-=15;
		t.timer2=setTimeout("hide()",5);
	}
	return;
}

function createxmlhttp()
{
	var xmlhttp=false;
	try	{
  		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
 	} 
	catch (e) {
  		try {
   			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
  		} 
		catch (e) {
   			xmlhttp = false;
 		}
 	}
	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
  		xmlhttp = new XMLHttpRequest();
				if (xmlhttp.overrideMimeType) {//设置MiME类别
			xmlhttp.overrideMimeType('text/xml');
		}
	}	

	return xmlhttp;	
}




function show_htmlcontent(f_name){
var xmlhttp=createxmlhttp();
if(!xmlhttp){
	alert("你的浏览器不支持XMLHTTP！！");
	return;
}	
var url = '/faculty/faculty.asp?f_name='+f_name+'&time='+new Date().getTime();
xmlhttp.onreadystatechange=get_resultdata;
xmlhttp.Open("GET",url,true);
xmlhttp.send(null);

	function get_resultdata(){
		var echomsg = getElementById("echomsg");
		echomsg.style.display="block";
		echomsg.innerHTML = "Loading...";
		  if (xmlhttp.readyState == 4){	
		// 信息已经返回，可以开始处理
		if( xmlhttp.status == 200 ){
				echomsg.style.display="none";
				getElementById("diagbox_body").innerHTML=xmlhttp.responsetext;
				show();

}
		  }
		
	}

}