if (window.Event)   
document.captureEvents(Event.MOUSEUP);   
function nocontextmenu()    
{  
event.cancelBubble = true  
event.returnValue = false;  
return false;}
    
function norightclick(e)   
{  
 if (window.Event)   
 {  
 if (e.which == 2 || e.which == 3)  
 return false;}
     
 else  
 if (event.button == 2 || event.button == 3)  
 {  
 event.cancelBubble = true  
 event.returnValue = false;  
 return false;}}
     
document.oncontextmenu = nocontextmenu;   
document.onmousedown = norightclick;   
function disableselect(e){
return false}

function reEnable(){
return true}

document.onselectstart=new Function ("return false")
if (window.sidebar){
document.onmousedown=disableselect
document.onclick=reEnable}