Hiding Fields on NewForm and EditForm.aspx using Javscript

This code describe sharepoint List Hiding fields on NewForm and EditForm.aspx, the easy way

<script language="javascript" type="text/javascript">

_spBodyOnLoadFunctionNames.push("hideFields");

function findacontrol(FieldName)
{

    var arr = document.getElementsByTagName("!");
    // get all comments
    for (var i=0;i < arr.length; i++ )
    {
        // now match the field name
        if (arr[i].innerHTML.indexOf(FieldName) > 0)
        {

             return arr[i];
        }
    }
}

function hideFields()
{

   var control = findacontrol("Title");
   control.parentNode.parentNode.style.display="none";
   control = findacontrol("Document Link");
   control.parentNode.parentNode.style.display="none";
   control = findacontrol("PublishDate");
   control.parentNode.parentNode.style.display="none";

}
</script>