var READY_STATE_COMPLETE = 4;
	var p_http = null;
	
	// Inicia la peticion XHR
	function init_xhr(){
		if (window.XMLHttpRequest){
			return new XMLHttpRequest();
		} 
		else {
			return new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	// Crea el query que se enviara al servidor
	function query_string(){
		return "&nocache=" + Math.random();
	}

	// Funcion que verifica si un usuario existe o no
	function getMarquee(){
		p_http = init_xhr();
		if (p_http){
			p_http.onreadystatechange = doMarquee;
			p_http.open("get","./jsp/marquee.jsp");
		  	p_http.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); 
			var query = query_string();
			p_http.send(query);
		}
	}
	
function doMarquee(){
	if (p_http.readyState == READY_STATE_COMPLETE) {
		if(p_http.status == 200){
			if (p_http.responseText != ""){
					document.getElementById("lmarquee").style.visibility = "hidden";
					document.getElementById("lmarquee").style.display = "none";
					document.getElementById("marquee").style.visibility = "visible";
					document.getElementById("marquee").style.display = "inline";

					// contenido del scroll
					document.getElementById('marquee').innerHTML ='<marquee direction="up" scrollAmount="1.3" style="width:auto;height:153px" id="marx"><font size="1" face="Comic Sans MS">'+p_http.responseText+'</font></marquee>';
					document.getElementById('marx').start();

					function regenerate()
					{
						window.location.reload()
					}
					function regenerate2()
					{
						if (document.layers)
						{
							setTimeout("window.onresize=regenerate",450)
							intializemarquee()
						}
					}
					function intializemarquee()
					{
						document.cmarquee01.document.cmarquee02.document.write(marqueecontents)
						document.cmarquee01.document.cmarquee02.document.close()
						thelength=document.cmarquee01.document.cmarquee02.document.height
						scrollit()
					}
					function scrollit()
					{
					if (document.cmarquee01.document.cmarquee02.top>=thelength*(-1))
					{
						document.cmarquee01.document.cmarquee02.top-=speed
						setTimeout("scrollit()",100)
					}		
					else
					{
						document.cmarquee01.document.cmarquee02.top=marqueeheight
						scrollit()
					}	
				}
				window.onload=regenerate2
			} 

		}
	}
}
getMarquee();