function MM_openBrWindow(theURL,winName,features) { 
	//v2.0 
	var winwidth = 600; 
	var winheight = 600; 
	var posw = (screen.width - winwidth)/2; 
	var posv = (screen.height - winheight)/2; 
	
	features = features + ",width=" + winwidth + ",height=" + winheight + 
	",left=" + posw + ",top="+ posv 
	window.open(theURL,winName,features); 
}