disable highlight & copy paste

assalamualaikum .
hello hello .new new new tutorial ;D 
follow the steps ; 
sign in . dashboard . design . page element . add a gadget . HTML/Javascript . paste this code .

<script type="text/javascript">
function disableSelection(target){
if (typeof target.onselectstart!="undefined") //IE route
target.onselectstart=function(){return false}
else if (typeof target.style.MozUserSelect!="undefined") //Firefox route
else //All other route (ie: Opera)
target.onmousedown=function(){return false}
target.style.cursor = "default"
//Sample usages
//disableSelection(document.body) //Disable text selection on entire body
//disableSelection(document.getElementById("mydiv")) //Disable text selection on element with id="mydiv"
<script type="text/javascript">
disableSelection(document.body) //disable text selection on entire body of page

done  .