function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function ventana(URL,nombre,ancho,alto) 
	{
		x = (screen.width - ancho)/2
		y = (screen.height - alto)/2
		eval("page = window.open(URL, nombre, 'toolbar=0,scrollbars=no,location=0,statusbar=0,menubar=0,resizable=1,width="+ancho+",height="+alto+",left=" + x + ",top = " + y + "');");
		
	}

function NuevoAjax(){
        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();
        }
        return xmlhttp;
}

function getAjax (url, div){
        var contenedor = document.getElementById(div);
        ajax=NuevoAjax(); 
        //peticionamos los datos, le damos la url enviada desde el link
        ajax.open("GET", url, true); 
        ajax.onreadystatechange=function(){
                if(ajax.readyState==1){

            contenedor.innerHTML = "<div align='center'style='float: right; width: 225px; margin: 60px 0;'><img src='images/loading.gif' width='30' height='30' /><br />Cargando...</div>";

            }else if(ajax.readyState==4){
                        if(ajax.status==200){
                                //mostramos los datos dentro del contenedor
                                contenedor.innerHTML = ajax.responseText
                        }else if(ajax.status==404){
                                contenedor.innerHTML = "La página no existe";
                        }else{
                                //mostramos el posible error
                                contenedor.innerHTML = "Error:".ajax.status; 
                        }
                }
        }
        ajax.send(null);
}