function disableSelection(target){
  if (typeof target.onselectstart!="undefined") //IE route
      target.onselectstart=function(){return false}
  else if (typeof target.style.MozUserSelect!="undefined") //Firefox route
      target.style.MozUserSelect="none"
  else //All other route (ie: Opera)
      target.onmousedown=function(){return false}
  target.style.cursor = "default"
}