if (document.images) {

 img1_on =new Image(); img1_on.src ="http://www.hf-hersted.dk/images/menubutton1.gif"; 
 img1_off=new Image(); img1_off.src="http://www.hf-hersted.dk/images/menubutton1off.gif"; 

 img2_on =new Image(); img2_on.src ="http://www.hf-hersted.dk/images/menubutton2.gif"; 
 img2_off=new Image(); img2_off.src="http://www.hf-hersted.dk/images/menubutton2off.gif"; 

 img3_on =new Image(); img3_on.src ="http://www.hf-hersted.dk/images/menubutton3.gif"; 
 img3_off=new Image(); img3_off.src="http://www.hf-hersted.dk/images/menubutton3off.gif"; 

 img4_on =new Image(); img4_on.src ="http://www.hf-hersted.dk/images/menubutton4.gif"; 
 img4_off=new Image(); img4_off.src="http://www.hf-hersted.dk/images/menubutton4off.gif"; 

}

function handleOver(k) {
 if (document.images)
  eval('document.img'+k+'.src=img'+k+'_on.src');
}

function handleOut(k) {
 if (document.images) 
  eval('document.img'+k+'.src=img'+k+'_off.src');
}

    function checksearch() {
      var key = window.event.keyCode;
      if (key == 13) {
        document.search.submit();
      }
    }

    // Right Click Disabled function................................................................
    
    var message="Function Disabled!";
    
    function clickIE4(){
      if (event.button==2){
        return false;}
    }
    
    function clickNS4(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=clickNS4;
      }
    else if (document.all&&!document.getElementById){
      document.onmousedown=clickIE4;
    }
    
    document.oncontextmenu=new Function("return false")