/* standard small functions */
function $m(quem) {
	return document.getElementById(quem)
}
function remove(quem) {
	quem.parentNode.removeChild(quem);
}
function addEvent(obj, evType, fn) {
	// elcio.com.br/crossbrowser
	if (obj.addEventListener)
		obj.addEventListener(evType, fn, true)
	if (obj.attachEvent)
		obj.attachEvent("on" + evType, fn)
}
function removeEvent(obj, type, fn) {
	if (obj.detachEvent) {
		obj.detachEvent('on' + type, fn);
	} else {
		obj.removeEventListener(type, fn, false);
	}
}
/* THE UPLOAD FUNCTION */
function micoxUpload(form, url_action, id_element, html_show_loading, html_error_http) {
	/******
	* micoxUpload - Submit a form to hidden iframe. Can be used to upload
	* Use but dont remove my name. Creative Commons.
	* Versão: 1.0 - 03/03/2007 - Tested no FF2.0 IE6.0 e OP9.1
	* Author: Micox - Náiron JCG - elmicoxcodes.blogspot.com - micoxjcg@yahoo.com.br
	* Parametros:
	* form - the form to submit or the ID
	* url_action - url to submit the form. like action parameter of forms.
	* id_element - element that will receive return of upload.
	* html_show_loading - Text (or image) that will be show while loading
	* html_error_http - Text (or image) that will be show if HTTP error.
	*******/
	//testing if 'form' is a html object or a id string
	form = typeof (form) == "string" ? $m(form) : form;

	var erro = "";
	if (form == null || typeof (form) == "undefined") { erro += "The form of 1st parameter does not exists.\n"; }
	else if (form.nodeName.toLowerCase() != "form") { erro += "The form of 1st parameter its not a form.\n"; }
	if ($m(id_element) == null) { erro += "The element of 3rd parameter does not exists.\n"; }
	if (erro.length > 0) {
		showAlert('Erro ao carregar a imagem!');
		return;
	}

	//creating the iframe
	var iframe = document.createElement("iframe");
	iframe.setAttribute("id", "micox-temp");
	iframe.setAttribute("name", "micox-temp");
	iframe.setAttribute("width", "0");
	iframe.setAttribute("height", "0");
	iframe.setAttribute("border", "0");
	iframe.setAttribute("style", "width: 0; height: 0; border: none;");

	//add to document
	form.parentNode.appendChild(iframe);
	window.frames['micox-temp'].name = "micox-temp"; //ie sucks

	//add event
	var carregou = function() {
		removeEvent($m('micox-temp'), "load", carregou);
		var cross = "javascript: ";
		cross += "window.parent.$m('" + id_element + "').innerHTML = document.body.innerHTML; void(0); ";

		$m(id_element).innerHTML = html_error_http;
		$m('micox-temp').src = cross;
		//del the iframe
		setTimeout(function() { remove($m('micox-temp')) }, 250);
	}
	addEvent($m('micox-temp'), "load", carregou)

	//properties of form
	form.setAttribute("target", "micox-temp");
	form.setAttribute("action", url_action);
	form.setAttribute("method", "post");
	form.setAttribute("enctype", "multipart/form-data");
	form.setAttribute("encoding", "multipart/form-data");
	//submit
	form.submit();

	//while loading
	if (html_show_loading.length > 0) {
		$m(id_element).innerHTML = html_show_loading;
	}
}