if (document.images) {  // If the image object exists    
      // Preload images
        off = new Array(12)
        on = new Array(12)
	off[0] = new Image();          
    off[0].src = "images/index_on12.jpg"; 
	off[1] = new Image();          
    off[1].src = "images/index_on14.jpg";
	off[2] = new Image();          
    off[2].src = "images/index_on16.jpg";
	off[3] = new Image();          
    off[3].src = "images/index_on19.jpg";
    off[4] = new Image();          
    off[4].src = "images/buttons/btn_reservationsoff.jpg";
	off[5] = new Image();          
    off[5].src = "images/buttons/btn_feedbackoff.jpg";

	
	on[0] = new Image();          
    on[0].src = "images/index_12.jpg";    
	on[1] = new Image();          
    on[1].src = "images/index_14.jpg";
	on[2] = new Image();          
    on[2].src = "images/index_16.jpg";
	on[3] = new Image();          
    on[3].src = "images/index_19.jpg";
	on[4] = new Image();          
    on[4].src = "images/buttons/btn_reservationson.jpg";
	on[5] = new Image();          
    on[5].src = "images/buttons/btn_feedbackon.jpg";
	
     } 

    function buttonOn(buttonName,num) {  
        if (document.images) { // If the image object exists   
          // Change images on the page
          document[buttonName].src = on[num].src;
        }
    }

    function buttonOff(buttonName,num) {  
        if (document.images) { // If the image object exists   
          // Change images on the page
          document[buttonName].src = off[num].src;
        }
    }
function qOn(num) {
	buttonOn("button"+num,num);  
 	return true;
    }

    function qOff(num) {  
	buttonOff("button"+num,num);  
 	return true;
    }