//script declarations

function open_window(url, width, height, scrollbars)
{
	var win = null; 
	var winl = (screen.width-width)/2; 
	var wint = (screen.height-height)/2; 
	settings = 'height='+height+',width='+width+',top='+wint+',left='+winl+',scrollbars='+scrollbars+',toolbar=no,location=no,status=no,menubar=no,resizable=no,dependent=no';
	win = window.open(url, "popwin", settings);
	if(parseInt(navigator.appVersion) >= 4){ win.window.focus(); } 
}