Mouse Deselection for webpage in blogger

<script type='text/javascript'>
//Disable mouse select
var omitformtags=[&quot;input&quot;, &quot;textarea&quot;, &quot;select&quot;]
omitformtags=omitformtags.join(&quot;|&quot;)
function disableselect(e){
if (omitformtags.indexOf(e.target.tagName.toLowerCase())==-1)
return false }
function reEnable(){
return true }
if (typeof document.onselectstart!=&quot;undefined&quot;)
document.onselectstart=new Function (&quot;return false&quot;)
else {
document.onmousedown=disableselect
document.onmouseup=reEnable }
</script>