function changeImage(imgName1,type) {
		var imgFile1 = eval(imgName1 + type + "Img.src")
		document.images[imgName1].src = imgFile1
		return false
}


function DetectBrowser()
{
  var version = 0;
  if (navigator.userAgent.indexOf("Mozilla/3.0") != -1) version = 3;
  else if (navigator.userAgent.indexOf("Mozilla/4.0") != -1) version = 3;
  else if (navigator.userAgent.indexOf("Mozilla/2.0") != -1) version = 2;
  else if (navigator.userAgent.indexOf("MSIE") != -1) version = 1;
  else version = 0;
  return version;
}


agent = navigator.userAgent
browserVer = DetectBrowser();
// preload universal images:
if (browserVer == 3)
{
//images declarations
        var nav_bikesNormImg = new Image(69,34)
        var nav_bikesOverImg = new Image(69,34)
        var nav_gearNormImg = new Image(69,34)
        var nav_gearOverImg = new Image(69,34)
		var nav_ridesNormImg = new Image(69,34)
        var nav_ridesOverImg = new Image(69,34)
		var nav_teamNormImg = new Image(69,34)
        var nav_teamOverImg = new Image(69,34)
		var nav_homeNormImg = new Image(84,34)
        var nav_homeOverImg = new Image(84,34)
		var nav_directionsNormImg = new Image(151,34)
        var nav_directionsOverImg = new Image(151,34)
		var nav_listNormImg = new Image(87,15)
        var nav_listOverImg = new Image(87,15)
		var nav_emailNormImg = new Image(155,20)
        var nav_emailOverImg = new Image(15,20)

//Rollover image sources	
 		nav_bikesNormImg.src = "images/bikes_off.gif"
        nav_bikesOverImg.src = "images/bikes_on.gif"
       	nav_gearNormImg.src = "images/gear_off.gif"
        nav_gearOverImg.src = "images/gear_on.gif"
		nav_homeNormImg.src = "images/home_off.gif"
        nav_homeOverImg.src = "images/home_on.gif"
		nav_ridesNormImg.src = "images/rides_off.gif"
        nav_ridesOverImg.src = "images/rides_on.gif"
		nav_teamNormImg.src = "images/team_off.gif"
        nav_teamOverImg.src = "images/team_on.gif"
		nav_directionsNormImg.src = "images/directions_Off.gif"
        nav_directionsOverImg.src = "images/directions_on.gif"
		nav_listNormImg.src = "images/mailinglist_Off.gif"
        nav_listOverImg.src = "images/mailinglist_on.gif"
		nav_emailNormImg.src = "images/footer_email_Off.gif"
        nav_emailOverImg.src = "images/footer_email_on.gif"

}