function LoadPagina(ID, Pagina, Param) {
   document.body.scrollTop = 0
   var Exec = 'AjaxLoadPag.asp'
   var Exte = Pagina.substr(Pagina.length - 3, 3)
   if(Exte=='asp'){Exec=Pagina}
   var retXML = createXMLHTTP();
   retXML.open("post", Exec, true);
   retXML.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
   retXML.onreadystatechange=function(){
         if (retXML.readyState==4){
             var retHTML = retXML.responseText;
             retHTML = retHTML.replace(/\+/g," ");
             retHTML = unescape(retHTML);
             if(retHTML.substr(0,4)=='MSG=') {alert(retHTML.substr(4));LoadPag='0';return}
             eval('document.all.'+ID+'.innerHTML = retHTML');LoadPag = '0'}}
             retXML.send("Pagina="+Pagina+"&"+Param);
}
	function createXMLHTTP() 
	{
		var ajax;
		try 
		{
			ajax = new ActiveXObject("Microsoft.XMLHTTP");
		} 
		catch(e) 
		{
			try 
			{
				ajax = new ActiveXObject("Msxml2.XMLHTTP");
				alert(ajax);
			}
			catch(ex) 
			{
				try 
				{
					ajax = new XMLHttpRequest();
				}
				catch(exc) 
				{
					 alert("Esse browser não tem recursos para uso do Ajax");
					 ajax = null;
				}
			}
			return ajax;
		}
	
		   var arrSignatures = ["MSXML2.XMLHTTP.5.0", "MSXML2.XMLHTTP.4.0",
							    "MSXML2.XMLHTTP.3.0", "MSXML2.XMLHTTP",
							    "Microsoft.XMLHTTP"];
		   for (var i=0; i < arrSignatures.length; i++) 
		   {
				try 
				{
					var oRequest = new ActiveXObject(arrSignatures[i]);
					return oRequest;
				} 
				catch (oError) 
				{
			    }
		   }
		
			   throw new Error("MSXML is not installed on your system.");
	}