function externalLinks() { 
	if (!document.getElementsByTagName) return; 
	var anchors = document.getElementsByTagName("a"); 
	for (var i=0; i<anchors.length; i++) { 
		var anchor = anchors[i]; 
		if (anchor.getAttribute("href") && anchor.getAttribute("rel") == "external") anchor.target = "_blank"; 
	} 
}
window.onload = externalLinks;
function okno()
{
msg = window.open('link', 'nove', 'toolbar=no, menubar=no, location=yes, directories=no, scrollbars=yes, resizable=yes, status=yes, width=900, height=500, top=100, left=100')
//Pozor, definice proměnné msg musí být napsána na jednom řádku!
}