function makePopup(windowPosX,windowPosY,windowName,url,name,w,h,extra){
	var titlebarHeight = 28;
	str="height="+h+",width="+w+","+extra;
	if(parseInt(navigator.appVersion)>3) // supports screen.width
		if (windowPosX == -1) {
			str+=",left=" + (screen.width -w)/2 + ",top=" + parseInt(((screen.height -h)-titlebarHeight)/2);
		}
		else {
			str+=",left="+windowPosX+",top="+windowPosY;
		}
	var k = eval(windowName + "=window.open('" + url + "','" + name + "','" + str + "')");
	return k;
}

function openMap(url) {
	ak_pop = makePopup(-1,-1,'tab', url,'tab',614,520,'scrollbars=no');			
	ak_pop.focus();	
	return false;
}