if( document.images )
{

  but1 = new Image(180,24) ;
  but1.src = "/images/button1off.gif";
  but2 = new Image(180,24) ;
  but2.src = "/images/button1on.gif";

  but3 = new Image(180,24) ;
  but3.src = "/images/button2off.gif";
  but4 = new Image(180,24) ;
  but4.src = "/images/button2on.gif";

  but5 = new Image(180,24) ;
  but5.src = "/images/button3off.gif";
  but6 = new Image(180,24) ;
  but6.src = "/images/button3on.gif"; 

  but7 = new Image(180,24) ;
  but7.src = "/images/button4off.gif";
  but8 = new Image(180,24) ;
  but8.src = "/images/button4on.gif";
  
  but9 = new Image(180,24);
  but9.src = "/images/button5off.gif";
  but10 = new Image(180,24);
  but10.src = "/images/button5on.gif";
  
  but11 = new Image (180,24);
  but11.src = "/images/button6off.gif";
  but12 = new Image (180,24);
  but12.src = "/images/button6on.gif";

  but13 = new Image (180,24);
  but13.src = "/images/underbar_btn1_off.gif";
  but14 = new Image (180,24);
  but14.src = "/images/underbar_btn1_on.gif";
  
  but15 = new Image (180,24);
  but15.src = "/images/underbar_btn2_off.gif";
  but16 = new Image (180,24);
  but16.src = "/images/underbar_btn2_on.gif";
  
  but17 = new Image (180,24);
  but17.src = "/images/underbar_btn3_off.gif";
  but18 = new Image (180,24);
  but18.src = "/images/underbar_btn3_on.gif";
  
  but19 = new Image (180,24);
  but19.src = "/images/underbar_btn4_off.gif";
  but20 = new Image (180,24);
  but20.src = "/images/underbar_btn4_on.gif";
  
  but21 = new Image (180,24);
  but21.src = "/images/underbar_btn5_off.gif";
  but22 = new Image (180,24);
  but22.src = "/images/underbar_btn5_on.gif";

  }


function chkVer(imagename,objectsrc)
{
var n=navigator.appName
var v=parseInt(navigator.appVersion)
var browsok=((n=="Netscape")&&(v>=3))
var browsok2=((n=="Microsoft Internet Explorer")&&(v>=4))
if ((browsok)||(browsok2))
document.images[imagename].src=eval(objectsrc+".src")
}