var omitformtags=["input", "textarea", "select"] 

omitformtags=omitformtags.join("|") 

function disableselect(e){ 
if (omitformtags.indexOf(e.target.tagName.toLowerCase())==-1) 
return false 
} 

function reEnable(){ 
return true 
} 

if (typeof document.onselectstart!="undefined") 
document.onselectstart=new Function ("return false") 
else{ 
document.onmousedown=disableselect 
document.onmouseup=reEnable 
} 
function stop(){ 
return false; 
} 
document.oncontextmenu=stop;