/* copyright by Joerg Buetehorn - http://www.buetehorn.de  */

function browsertest() {
	vers = parseInt(navigator.appVersion);
  	if (vers <= 3) {
    	window.location.href = "sorry.htm";
	}
	else {
	return true;
	}
}

function frametest() {
if(top.frames.length > 0)
      top.location.href=self.location;
}

function SwitchImage(imgSource,imgName) {
  if (document.images[imgName]) {
    document.images[imgName].src = imgSource;
    return true;
  }
}