IE=(navigator.appName=="Microsoft Internet Explorer");
NS=(navigator.appName=="Netscape");
bVer=parseInt(navigator.appVersion);

function popExternal(htmlURL){
 _params = "width=750,height=550,fullscreen=no,toolbar=yes,status=yes,menubar=yes,scrollbars=yes,resizable=yes,directories=yes,location=yes";
	
	if (bVer >= 4) {
	 _left = ( (screen.width-750) >>1 );
		 _top = ( (screen.height-750) >>1 );
	} else {
		 _top=25, _left=25;
	}
	if (IE) _params += ",top=" + _top + ",left=" + _left;
	else if (NS) _params += ",screenX=" + _left + ",screenY=" + _top;

	newWin = null;
	newWin = window.open(htmlURL,"BVRC", _params);
	window.newWin.focus();
	if (newWin.opener==null) 
		newWin.opener=window;
}