function window_opener(w,h,page){

	//ah = available screen height, aw = available screen width
	var ah = screen.availHeight;
	var aw = screen.availWidth;
	//ph - where the window horizontal top will be positioned to
	//pw - where the window left edge will be positioned to
	var ph = ah/2-(h/2);
	var pw = aw/2-(w/2);
	
	window.open(page,'openedpage','width='+w+',height='+h+',status=no,toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=no,left='+pw+',top='+ph);
}

function chat_opener(){
	var w = 472;
	var h = 320;
	
	var chatURL = 'http://hc2.humanclick.com/hc/44571613/?cmd=file&file=visitorWantsToChat&site=44571613';
	
	//ah = available screen height, aw = available screen width
	var ah = screen.availHeight;
	var aw = screen.availWidth;
	//ph - where the window horizontal top will be positioned to
	//pw - where the window left edge will be positioned to
	var ph = ah/2-(h/2);
	var pw = aw/2-(w/2);
		
	window.open(chatURL,'chat','width='+w+',height='+h+',scrollbars=no,left='+pw+',top='+ph);
}