function checkform()
{
	document.frmbussearch.keyword.value = trim(frmbussearch.keyword.value);
}

function trim(str)
{
	return str.replace(/^\s+|\s+$/g,'');
	return str;
}

function submit_search()
{	
	if (top_validate_search() == true)
	{
		var key;
		key = document.frmbussearch.keyword.value;
		// key = key.replace(/[^a-zA-Z 0-9-]+/g,' ');
		window.location = "results.php?keyword=" + key;
		return false;
	}
}

function top_validate_search()
{
  x = document.frmbussearch;
  if(x.keyword.value=="") 
  {
    alert("You must specify atleast one keyword");
	x.keyword.focus();
	return false;
  }
  return true;
}