اینو بین تگ body بزارین
<body>
<SCRIPT language=javascript1.2>
//Disable select-text script (IE4+, NS6+)
//Exclusive permission granted to Dynamic Drive to feature script
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
}
</SCRIPT>
</body>
متشكر
اشكان