function changeURLIntoLink(){
  var aryDiv = document.getElementsByTagName("div");
  var sHTML;
  var regURL = new RegExp("(s?https?://[-_.!~*'()a-zA-Z0-9;/?:@&=+$,%#]+)","g");
  for(var i = 0; i < aryDiv.length ; i++){
    if(aryDiv[i].getAttribute("class") == "comments-body" ||
    aryDiv[i].getAttribute("className") == "comments-body"){
      sHTML = aryDiv[i].innerHTML;
      aryDiv[i].innerHTML = sHTML.replace(regURL,'<a href="$1" target="_blank">$1</a>');
    }
    }
}