function CheckMainSearch(form){

	if(form.TopMainSearchPattern.value==""){
		alert("Preencha o conteúdo da busca");
		form.TopMainSearchPattern.focus();
		return false;
	}

	if(form.SearchOption.options[form.SearchOption.selectedIndex].value==""){
		alert("Selecione o tipo de busca");
		form.TopMainSearchOption.focus();
		return false;
	}

	return true;

}