function formValidation(obj_form){
	var flag_error = 0;
	var array_error_msg = new Array();

	var obj_field;
	var field_xtype;
	var field_label;
	var field_value;
	var field_id;
	var field_name;

	var obj_field_pattern;
	var field_pattern_value;
	var flag_selected;

	for(var i = 0; i < obj_form.length; i++){
		obj_field = obj_form[i];
		field_xtype = (obj_field.getAttribute("xtype")) ? obj_field.getAttribute("xtype").trim().toLowerCase() : "";
		field_label = (obj_field.getAttribute("label")) ? obj_field.getAttribute("label").trim().toUpperCase() : "";
		field_value = (obj_field.value) ? obj_field.value.trim() : "";
		field_id = (obj_field.id) ? obj_field.id.trim() : "";
		field_name = (obj_field.name) ? obj_field.name.trim() : "";

		switch(field_xtype){
			case "not_empty":
				if(field_value == ""){
					obj_field.value = field_value;
					flag_error = 1;
					array_error_msg.push("<li><b>"+ field_label +" (OBRIGATÓRIO)</b></li>");
				}
				break;
			case "confirmation":
				obj_field_pattern = document.getElementById(field_id.substr(0, field_id.indexOf("_confirmation")));
				field_pattern_value = (obj_field_pattern.value) ? obj_field_pattern.value.trim() : "";

				if(field_value == "" || field_value != field_pattern_value){
					obj_field.value = field_value;
					flag_error = 1;
					array_error_msg.push("<li><b>"+ field_label +" (DEVE SER IDÊNTICO)</b></li>");
				}
				break;
			case "valid_email":
				if(field_value == "" || !isEmail(field_value)){
					obj_field.value = field_value;
					flag_error = 1;
					array_error_msg.push("<li><b>"+ field_label +" (E-MAIL VÁLIDO)</b></li>");
				}
				break;
			case "integer":
				if(field_value == "" || !isInteger(field_value)){
					obj_field.value = field_value;
					flag_error = 1;
					array_error_msg.push("<li><b>"+ field_label +" (NÚMERO INTEIRO)</b></li>");
				}
				break;
			case "select_one":
				if(obj_field[0].selected == true){
					flag_error = 1;
					array_error_msg.push("<li><b>"+ field_label +" (SELECIONE UMA OPÇÃO)</b></li>");
				}
				break;
			case "check_one":
				flag_selected = 0;

				obj_field_pattern = eval("obj_form."+ field_name);
				for(var j = 0; j < obj_field_pattern.length; j++){
					if(obj_field_pattern[j].checked == true){
						flag_selected = 1;
					}
				}

				if(flag_selected == 0){
					flag_error = 1;
					array_error_msg.push("<li><b>"+ field_label +" (SELECIONE UMA OPÇÃO)</b></li>");
				}
				break;
		}
	}
	if(flag_error == 1){
		showError(array_error_msg);
		return false;
	}
}

function dotb(title, url, extra){
	$(document).ready(function(){ tb_show(title, url, extra); });
}

function showError(array_error_msg){
	var height_modal = (array_error_msg.length * 15) + 70;

	var str_error_html = "";
	str_error_html += "<div>"+"\n";
	str_error_html += "<h1><b>Por favor, verifique os seguintes campos:</b></h1>"+"\n";
	str_error_html += "<ul>"+"\n";
	for(var i = 0; i < array_error_msg.length; i++){
		str_error_html += array_error_msg[i] +"\n";
	}
	str_error_html += "</ul>"+"\n";
	str_error_html += "</div>"+"\n";
	str_error_html += "<div style=\"text-align: center;\"><input type=\"button\" name=\"btalert\" id=\"btalert\" value=\"OK\" onclick=\"javascript: tb_remove();\" /></div>"+"\n";

	var obj_modal = document.getElementById("hiddenModalContent");
	obj_modal.innerHTML = str_error_html;

	dotb("", "#TB_inline?height="+ height_modal +"&amp;width=400&amp;inlineId=hiddenModalContent&amp;modal=true");
}