function checkInput(inputform)
{
   if(inputform.linkadd.value == "" || inputform.linkadd.value == " " || inputform.linkadd.value == "http://")
   {
       alert("Please enter a valid link for your file.");
        return false;
    }
   else if(inputform.description.value == "" || inputform.description.value == " ")
      {
         alert("Please enter a brief description of your contribution.");
         return false;
      }
}