// START CLEARFIELD SCRIPT
function clearField(field) {
        if (field.value == field.defaultValue) {
                field.value = "";
        }
}

function checkField(field) {
        if (field.value == "") {
                field.value = field.defaultValue;
        }
}
// END CLEARFIELD SCRIPT

// START FORM CHECK
function ErrorTopNavSearch(form_object, input_object, object_value, error_message)
    {
	alert(error_message);
       	return false;	
    }

function ValueTopNavSearch(obj, obj_type)
    {
    if (obj_type == "TEXT" || obj_type == "PASSWORD")
	{
    	if (obj.value.length == 0 || obj.value == "Search in...") 
      		return false;
    	else 
      		return true;
    	}
    else if (obj_type == "SELECT")
	{
        for (i=0; i < obj.length; i++)
	    	{
		if (obj.options[i].selected)
			return true;
		}
       	return false;	
	}
    else if (obj_type == "SINGLE_VALUE_RADIO" || obj_type == "SINGLE_VALUE_CHECKBOX")
	{
		if (obj.checked)
			return true;
		else
       		return false;	
	}
    else if (obj_type == "RADIO" || obj_type == "CHECKBOX")
	{
        for (i=0; i < obj.length; i++)
	    	{
		if (obj[i].checked)
			return true;
		}
       	return false;	
	}
	}

function  CheckTopNavSearch(_CF_this)
    {
    if  (!ValueTopNavSearch(_CF_this.searchstring, "TEXT" )) 
        {
        if  (!ErrorTopNavSearch(_CF_this, _CF_this.searchstring, _CF_this.searchstring.value, "Please Enter a Search Term!"))
            {
            return false; 
            }
        }

    return true;
    }
// END FORM CHECK