var BrowserOK = false;
  var BrowserMSIE3 = false;

  // Image object implemented in Netscape 3 and above
  if ( (navigator.appName == "Netscape") && navigator.appVersion.substring(0,1) > 2 ) {
    BrowserOK = true;
    }

  // and MSIE 4 and above
  else if ( navigator.appVersion.indexOf("MSIE") != -1 ) {
    BrowserMSIE3 = true;
    BrowserOK = false;
    if (navigator.appVersion.substring(0,1) > 3) {
      BrowserOK = true;
      }
    }

  // otherwise igonre image object
  else BrowserOK = false;


  //preload images!
  if (BrowserOK) {
	NewsImg = new Image()
	NewsImg.src = "images/newsH.gif"

	DiscImg = new Image()
	DiscImg.src = "images/discH.gif"

	BiogImg = new Image()
	BiogImg.src = "images/biogH.gif"

	GallImg = new Image()
	GallImg.src = "images/gallH.gif"

	DownImg = new Image()
	DownImg.src = "images/downH.gif"

	FlyImg = new Image()
	FlyImg.src = "images/flyH.gif"

	ContImg = new Image()
	ContImg.src = "images/contH.gif"

	LinkImg = new Image()
	LinkImg.src = "images/linkH.gif"

	GigsImg = new Image()
	GigsImg.src = "images/gigsH.gif"
	}

  function depress(target) {
  if (BrowserOK){
 
    var but_H = "document." + target + ".src";

    eval(but_H + "='images/" + target + "H.gif'");
    }
  }

  function raise(target) {
  if (BrowserOK){
 
    var but = "document." + target + ".src";

    eval(but + "='images/" + target + ".gif'");
    }
  }