// <![CDATA[
function clickIE() { 
  if (document.all) {
    ; 
    return false;
  }
}

function clickNS(e) {
  if (document.layers || (document.getElementById && !document.all)) {
    if (e.which == 2 || e.which == 3) {	
      ; 
      return false;
    }
  }
}

if (document.layers) {
    document.captureEvents(Event.MOUSEDOWN);
    document.onmousedown=clickNS;
} else {
    document.onmouseup=clickNS;
    document.oncontextmenu=clickIE;
}
document.oncontextmenu = new Function("return false")

//]]>