if( document.images )
{

  but1 = new Image() ;
  but1.src = "/images/lhs_button1_off.gif";
  but2 = new Image() ;
  but2.src = "/images/lhs_button1_on.gif";

  but3 = new Image() ;
  but3.src = "/images/lhs_button2_off.gif";
  but4 = new Image() ;
  but4.src = "/images/lhs_button2_on.gif";

  but5 = new Image() ;
  but5.src = "/images/lhs_button3_off.gif";
  but6 = new Image() ;
  but6.src = "/images/lhs_button3_on.gif"; 

  but7 = new Image() ;
  but7.src = "/images/lhs_button4_off.gif";
  but8 = new Image() ;
  but8.src = "/images/lhs_button4_on.gif";
  
  but9 = new Image() ;
  but9.src = "/images/lhs_button5_off.gif";
  but10 = new Image() ;
  but10.src = "/images/lhs_button5_on.gif";
  
  but11 = new Image() ;
  but11.src = "/images/lhs_button6_off.gif";
  but12 = new Image() ;
  but12.src = "/images/lhs_button6_on.gif";
  
  // These below are used on the left hand side brochure

  broch1 = new Image() ;
  broch1.src = "/images/broch_step1_off.gif";
  broch2 = new Image() ;
  broch2.src = "/images/broch_step1_on.gif";

  broch3 = new Image() ;
  broch3.src = "/images/broch_step2_off.gif";
  broch4 = new Image() ;
  broch4.src = "/images/broch_step2_on.gif";

  broch5 = new Image() ;
  broch5.src = "/images/broch_step3_off.gif";
  broch6 = new Image() ;
  broch6.src = "/images/broch_step3_on.gif"; 

  broch7 = new Image() ;
  broch7.src = "/images/broch_step4_off.gif";
  broch8 = new Image() ;
  broch8.src = "/images/broch_step4_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")
}