if (navigator.appVersion.substring(0,1) >= 3) {

	       rollover1on = new Image;
             rollover1on.src = "images/button01a.gif";
             rollover2on = new Image;
             rollover2on.src = "images/button02a.gif";
		 rollover3on = new Image;
             rollover3on.src = "images/button03a.gif";
		 rollover4on = new Image;
             rollover4on.src = "images/button04a.gif";
		 rollover5on = new Image;
             rollover5on.src = "images/button05a.gif";
		 rollover6on = new Image;
             rollover6on.src = "images/button06a.gif";
		 rollover7on = new Image;
             rollover7on.src = "images/button07a.gif";
		 

		 
             rollover1off = new Image;
             rollover1off.src = "images/button01.gif";
             rollover2off = new Image;
             rollover2off.src = "images/button02.gif";
             rollover3off = new Image;
             rollover3off.src = "images/button03.gif";
             rollover4off = new Image;
             rollover4off.src = "images/button04.gif";
             rollover5off = new Image;
             rollover5off.src = "images/button05.gif";
             rollover6off = new Image;
             rollover6off.src = "images/button06.gif";
             rollover7off = new Image;
             rollover7off.src = "images/button07.gif";
		 
             
		}

     function img_act(imgName) {
            if (navigator.appVersion.substring(0,1) >= 3) {
             imgOn = eval(imgName + "on.src");
             document [imgName].src = imgOn;
		}             
     }

     function img_inact(imgName) {
            if (navigator.appVersion.substring(0,1) >= 3) {
             imgOff = eval(imgName + "off.src");
             document [imgName].src = imgOff;
		}             
     }