function abreVentana(xwidth,xheight,xstatus,xscroll,xurl, nombreVentana) {
	var iposX= (screen.width/2) - (xwidth/2);
	var iposY= (screen.height/2) - (xheight/2);
	var argumentos= "toolbar=no,scrollbars=" + xscroll + ",resizable=no,height=" + xheight + ",width=" + xwidth + ",status=" + xstatus + ", left=" + iposX + ", top=" + iposY;
	remote= window.open(xurl, nombreVentana, argumentos);
	if (remote != null)
	{
		remote.focus();
		if (remote.opener == null)
		{ remote.opener = self;}
	}
 }

function abreVentana2(xwidth,xheight,xstatus,xscroll,xresize,xurl,nombreVentana) {
	var iposX= (screen.width/2) - (xwidth/2);
	var iposY= (screen.height/2) - (xheight/2);
	var argumentos= "toolbar=no,scrollbars=" + xscroll + ",resizable=" + xresize + ",height=" + xheight + ",width=" + xwidth + ",status=" + xstatus + ", left=" + iposX + ", top=" + iposY;
	remote= window.open(xurl, nombreVentana, argumentos);
	if (remote != null)
	{
		remote.focus();
		if (remote.opener == null)
		{ remote.opener = self;}
	}
 }