if (document.images)
   {
     kidson= new Image(46,27);
     kidson.src= secureURL + "/images/aqua/btn_aq_kids_on.gif";
     learningon= new Image(66,27);
     learningon.src=secureURL + "/images/aqua/btn_aq_learning_on.gif";
     seahorseon= new Image(78,27); 
     seahorseon.src=secureURL + "/images/aqua/btn_aq_seahorses_on.gif"; 
     sharkson= new Image(58,27);
     sharkson.src=secureURL + "/images/aqua/btn_aq_sharks_on.gif";  
     sioon= new Image(118,27);
     sioon.src=secureURL + "/images/aqua/btn_aq_scrippsinstit_on.gif";  
     bookson= new Image(111,27);
     bookson.src=secureURL + "/images/aqua/btn_aq_booksinterest_on.gif";  
     aqmcollectionon= new Image(121,27);
     aqmcollectionon.src=secureURL + "/images/aqua/btn_aquariumcollection_on.gif";
     giftson= new Image(68,27);
     giftson.src=secureURL + "/images/aqua/btn_aq_gifts_on.gif";
     
     kidsoff= new Image(46,27);
     kidsoff.src=secureURL + "/images/aqua/btn_aq_kids.gif";
     learningoff= new Image(66,27);
     learningoff.src=secureURL + "/images/aqua/btn_aq_learning.gif";
     seahorseoff= new Image(78,27);
     seahorseoff.src=secureURL + "/images/aqua/btn_aq_seahorses.gif";    
     sharksoff= new Image(58,27);
     sharksoff.src=secureURL + "/images/aqua/btn_aq_sharks.gif";
     siooff= new Image(118,27);
     siooff.src=secureURL + "/images/aqua/btn_aq_scrippsinstit.gif";
     booksoff= new Image(111,27);
     booksoff.src=secureURL + "/images/aqua/btn_aq_booksinterest.gif";
     aqmcollectionoff= new Image(121,27);
     aqmcollectionoff.src=secureURL + "/images/aqua/btn_aquariumcollection.gif";
     giftsoff= new Image(68,27);
     giftsoff.src=secureURL + "/images/aqua/btn_aq_gifts.gif";
     
   }

function up(imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + "on.src");
      document[imgName].src= imgOn;
    }
 }

function down(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
 }
 
 function chgImg(imgField,newImg) {
		if (document.images) {
			document[imgField].src= eval(newImg + ".src")
		}
	}