browserName = navigator.appName;
var IE;
if (browserName.indexOf("Netscape")!=-1) 
	IE = false;
else
	IE = true;

if (IE)
{
var winwidth = document.body.clientWidth;
var winheight = document.body.clientHeight;
var TablaLeft = (winwidth+20-760)/2;
}
else
{
var winwidth = window.innerWidth;
var winheight = window.innerHeight;
var TablaLeft = (winwidth-760)/2;
}
var TablaTop = (winheight-380)/2;
var AvisoTop=TablaTop+380;
var AvisoLeft=TablaLeft+565;
document.write("<style>#tablacentrada {POSITION: absolute; Z-INDEX: 1px; LEFT: "+TablaLeft+"px; TOP:"+TablaTop+"px;  visibility: visible;}#aviso {POSITION: absolute; Z-INDEX: 1px; LEFT: "+AvisoLeft+"px; TOP:"+AvisoTop+"px;  visibility: visible;}</style>");

function AbrirAviso(pagina) {
	var win= null;
	var winl = (screen.width-450)/2;
	var wint = (screen.height-350)/2
	settings='height=350,width=450,top='+wint+',left='+winl+',scrollbars=yes,fullscreen=no,toolbar=no,location=no,directories=no,status=no,menubar=auto,resizable=no'
	win=window.open(pagina,"formcorner",settings)
	
	if(parseInt(navigator.appVersion) >= 4){win.window.focus();}
}