/* 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.
* Versao: 1.0 - 03/03/2007 - Tested no FF2.0 IE6.0 e OP9.1
* Author: Micox - N�iron 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) {
  alert("Error in call micoxUpload:\n" + erro);
  return;
 }
 
 var formActionAtrrib = form.getAttribute("action");	
 //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");
 //submit
 form.submit();
 
 //while loading
 if(html_show_loading.length > 0){
	$m(id_element).innerHTML = html_show_loading;
	form.removeAttribute("target");
	form.setAttribute("action",formActionAtrrib);
 }
 
}