// JavaScript by NR, fonte Andy Scott da Dynamic Drive http://www.dynamicdrive.com
function disableselect(e){ return false } 
function reEnable(){ return true  } 
//if IE4+ 
document.onselectstart=new Function ("return false") 
//if NS6 
if (window.sidebar){ 
document.onmousedown=disableselect 
document.onclick=reEnable }