function popupwindow(url)
{
	var winl = (screen.width - 700) / 2;
	var wint = (screen.height - 500) / 2;
	mywindow = window.open(url, 'Tracker', 'status=no,toolbar=no,location=no,menubar=no,scrollbars=yes,resizable=yes,width=700,height=500,top='+wint+',left='+winl);
	mywindow.location = url;
}

function popupitem(url)
{
	var winl = (screen.width - 527) / 2;
	var wint = (screen.height - 580) / 2;
	mywindow = window.open(url, 'Item', 'status=no,toolbar=no,location=no,menubar=no,scrollbars=yes,resizable=yes,width=527,height=580,top='+wint+',left='+winl);
	mywindow.location = url;
}

function imgOn(imgName)
{
	if (document.images)
	{
		document[imgName].src = eval(imgName + "on.src");
	}
}

function imgOff(imgName)
{
	if (document.images)
	{
		document[imgName].src = eval(imgName + "off.src");
	}
}

if (document.images)
{
	img1on = new Image();
	img1on.src = "/iconos/empresali.gif";
	img2on = new Image();
	img2on.src = "/iconos/cuadrosli.gif";
	img3on = new Image();
	img3on.src = "/iconos/marcosli.gif";
	img4on = new Image();
	img4on.src = "/iconos/serviciosli.gif";
	img5on = new Image();
	img5on.src = "/iconos/englishli.gif";
	img6on = new Image();
	img6on.src = "/iconos/cambiarli.gif";
	img7on = new Image();
	img7on.src = "/iconos/comprarli.gif";
	img8on = new Image();
	img8on.src = "/iconos/descargali.gif";	

	img1off = new Image();
	img1off.src = "/iconos/empresail.gif";
	img2off = new Image();
	img2off.src = "/iconos/cuadrosil.gif";
	img3off = new Image();
	img3off.src = "/iconos/marcosil.gif";
	img4off = new Image();
	img4off.src = "/iconos/serviciosil.gif";
	img5off = new Image();
	img5off.src = "/iconos/englishil.gif";
	img6off = new Image();
	img6off.src = "/iconos/cambiaril.gif";
	img7off = new Image();
	img7off.src = "/iconos/compraril.gif";
	img8off = new Image();
	img8off.src = "/iconos/descargail.gif";	

}