if (document.images) {
image1on = new Image();
image1on.src = "images/orange_button_on.gif";
image1off = new Image();
image1off.src = "images/orange_button_off.gif";
image2on = new Image();
image2on.src = "images/grey_button_on.gif";
image2off = new Image();
image2off.src = "images/grey_button_off.gif";
image3on = new Image();
image3on.src = "images/blue_button_on.gif";
image3off = new Image();
image3off.src = "images/blue_button_off.gif";

ie4 = ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 ))
ns4 = ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4 ))

if (ns4) {
    layerRef="document.layers";
    styleRef="";

} else {
    layerRef="document.all";
    styleRef=".style";

}       

function moveDivisionRight(which, start, finish, step, speed){  
  if (ie4 || ns4){
    if (start > finish){ 
      eval(layerRef + '["' + which +'"]' + styleRef + '.left = start');
      start=start-step; 
      setTimeout("moveDivisionRight('"+which+"',"+start+","+finish+","+step+","+speed+")",speed);
    }     
  }
}

function moveDivisionLeft(which, start, finish, step, speed){  
  if (ie4 || ns4){
    if (start < finish){ 
      eval(layerRef + '["' + which +'"]' + styleRef + '.left = start');
      start=start+step; 
      setTimeout("moveDivisionLeft('"+which+"',"+start+","+finish+","+step+","+speed+")",speed);
    }     
  }
}

} 
function changeImages() {
if (document.images) {
for (var i=0; i<changeImages.arguments.length; i+=2) {
document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
}}}