// JavaScript Document
// PRELOADING IMAGES
if (document.images) {
 btn1_down=new Image(); btn1_down.src="images/btn-abcs-dn.png"; 
 btn1_up  =new Image(); btn1_up.src  ="images/btn-abcs.png"; 
 btn2_down=new Image(); btn2_down.src="images/btn-back-dn.png"; 
 btn2_up  =new Image(); btn2_up.src  ="images/btn-back.png"; 
 btn3_down=new Image(); btn3_down.src="images/btn-faq-dn.png"; 
 btn3_up  =new Image(); btn3_up.src  ="images/btn-faq.png"; 
 btn4_down=new Image(); btn4_down.src="images/btn-msmanners-dn.png"; 
 btn4_up  =new Image(); btn4_up.src  ="images/btn-msmanners.png"; 
 btn5_down=new Image(); btn5_down.src="images/btn-program-dn.png"; 
 btn5_up  =new Image(); btn5_up.src  ="images/btn-program.png"; 
 btn6_down=new Image(); btn6_down.src="images/btn-registration-dn.png"; 
 btn6_up  =new Image(); btn6_up.src  ="images/btn-registration.png"; 
 btn7_down=new Image(); btn7_down.src="images/btn-rides-dn.png"; 
 btn7_up  =new Image(); btn7_up.src  ="images/btn-rides.png"; 
 btn8_down=new Image(); btn8_down.src="images/btn-schedule-dn.png"; 
 btn8_up  =new Image(); btn8_up.src  ="images/btn-schedule.png"; 
}

// EVENT HANDLERS
function pressButton(btName) {
 if (document.images)
  eval('document.'+btName+'.src='+btName+'_down.src');
}

function releaseButton(btName) {
 if (document.images)
  eval('document.'+btName+'.src='+btName+'_up.src');
}