function searchFocus(field, mode, word)
{

	switch(mode) {
		case 0:	if ('' == field.value) {field.value=word;}
			break
		case 1:	if (word == field.value) {field.value='';}
			break;
		default: // 3
			if (word != field.q.value && '' != field.q.value) {return true;}
	}
	return false;
}