      <!--
        imgAa=new Image()
        imgAa.src="images/button_enter_blue.jpg"
        imgAb=new Image()
        imgAb.src="images/button_enter_red.jpg"
        
        imgBa=new Image()
        imgBa.src="images/button_leave_blue.jpg"
        imgBb=new Image()
        imgBb.src="images/button_leave_red.jpg" 

        img1a=new Image()
        img1a.src="images/button_home_blue.jpg"
        img1b=new Image()
        img1b.src="images/button_home_red.jpg"

        img2a=new Image()
        img2a.src="images/button_photos_blue.jpg"
        img2b=new Image()
        img2b.src="images/button_photos_red.jpg"
        
        img3a=new Image()
        img3a.src="images/button_audio_blue.jpg"
        img3b=new Image()
        img3b.src="images/button_audio_red.jpg"        
        
        img4a=new Image()
        img4a.src="images/button_video_blue.jpg"
        img4b=new Image()
        img4b.src="images/button_video_red.jpg"
        
        img5a=new Image()
        img5a.src="images/button_maretrivia_blue.jpg"
        img5b=new Image()
        img5b.src="images/button_maretrivia_red.jpg"        
        
        img6a=new Image()
        img6a.src="images/button_sendemail_blue.jpg"
        img6b=new Image()
        img6b.src="images/button_sendemail_red.jpg"
      //-->