function clearForms()
{
  var i;
  for (i = 0; (i < document.forms.length); i++) {
    document.forms[i].reset();
  }
}

function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false}
else {return true}
}
}
 
function validate_form(thisform)
{
with (thisform)
{
if (validate_required(searchterm,"Please enter an ISSN number")==false)
  {searchterm.focus();return false}
}
}