function Changeaction(selBox)
  {
    var sel = selBox.options[selBox.selectedIndex].value;
    document.getElementById("SearchForm").action = document.getElementById("SearchForm").action + "?option="+sel;
  }
 
/* Clear the search box on focus */ 
 function clearText(thefield){
	if (thefield.defaultValue==thefield.value){
		thefield.value = "";
	}
}