function download_index(nid){
	var oHttp = new ActiveXObject("Microsoft.XMLHTTP");
	oHttp.open("POST","../../../portal.do?PID=060103",false);
	oHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	oHttp.send("nid=" +nid );
	//alert(oHttp.responseText); 
	if ( oHttp.responseText!=""){
		var urls= 	 oHttp.responseText;	
		oHttp.open("POST","../../../portal.do?PID=060102",false);
		oHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
		oHttp.send("nid="+nid);
		if ( oHttp.responseText=="0"){
			//window.open("../../../"+urls , "_blank" );
			window.location="../../../"+urls;
		}else{
			alert("无法找到下载资源，请与管理员联系！");
		}
			 
	}else{
		alert("无法找到下载资源，请与管理员联系！");
	}
}