function isBlank(s)
{
  var len=s.length;

  for(i=0;i<len;++i)
    {
      if(s.charAt(i)!=" ") return false;
    }
  return true;
}


function keywordCheck(str)
{
  var expr=document.forms[0].category;
  var selectOption=expr.selectedIndex;
  var selectValue=expr[selectOption].value;
  var statusFlg=false;
  var form=document.forms[0];
  stringToChk=form.searchValue.value;
  if(selectValue=="index.php")
    {
      alert("Category not selected, please select a category");
    }
  else
    {
      if(isBlank(stringToChk) || stringToChk == "" || stringToChk == null)
	{
	  statusFlg=false;
	}
      else
	{
	  statusFlg=true;
	}
      if(statusFlg)
	{
	  var formField=document.forms[0];
	  formField.submit();
	}
      else
	{
	  alert("Keyword field is empty, please enter a keyword and proceed ");
	  document.forms[0].searchValue.focus();
	}
    }
}