function setPosition() {
 if((navigator.appName=="Netscape" &&
       parseInt(navigator.appVersion.substring(0,1))>=5) ||
    (navigator.appName=="Opera" &&
       parseInt(navigator.appVersion.substring(0,1))>=7)) {

  document.getElementById("adminmenu").style.position="fixed";
 }

 if(navigator.appName=="Microsoft Internet Explorer") {
  document.getElementById("adminmenu").style.top=document.body.scrollTop+0+"px";
  window.setTimeout("setPosition()",1);
 }

 if(navigator.appName=="Netscape" &&
    navigator.appVersion.substring(0,1)=="4") {

  document.menu.top=window.pageYOffset+0;
  window.setTimeout("setPosition()",1);
 }
}