var maxWidth = 2000;
var minWidth = 800;
var maxHeight = 1200;
var minHeight = 600;
var pageName = "Leonardo";

function checkWindow(){
	var maxW = screen.availWidth > maxWidth ? maxWidth : screen.availWidth - 8;
	var maxH = screen.availHeight > maxHeight ? maxHeight : screen.availHeight - 33;
	callOpen(window.location.href, maxW, maxH);
}

function callOpen(openPage, width, height){
	window.open(openPage, pageName, "'toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=no,left="+((screen.width/2) - (width/2)+4)+",top="+((screen.height / 2) - (height / 2)+30)+",width="+width+",height="+height+"'");
}