// ==========================================================================			 
// @function		Complete AHAH function
// @author		Daniele Florio
// @site		www.gizax.it
// @version		1.1.2 experimental

// @thanksTo		Andrea Paiola,Walter Wlodarski,Scott Chapman

// (c) 2006 Daniele Florio <daniele@gizax.it>

// ==========================================================================


ahahEvalJS = function(elementId) {
	var scripts = document.getElementById(elementId).getElementsByTagName('script');
	var code;
	for (var i = 0; i < scripts.length; i++) {
		code =	scripts[i].innerHTML ? scripts[i].innerHTML : 
			scripts[i].text ? scripts[i].text : 
			scripts[i].textContent;
		try {
			eval(code);
		} catch(e) {
			alert(e);
		}
	}
}


var completeAHAH = {
	
	loading : '<div align="center"><img src="/images/loading2.gif" alt="" /></div>',

	ahah : function (url, target, delay, method, parameters) {
		
		this.creaDIV(target, this.loading);
			
		if (window.XMLHttpRequest) {	// Mozilla, Safari, ecc...
			var req = new XMLHttpRequest();
			if(req.overrideMimeType) {	// ovvia il bug di alcune versioni di Mozilla
				req.overrideMimeType("text/xml");
			}
		} else if (window.ActiveXObject) {	// IE
			try {
				req = new ActiveXObject("Msxml2.XMLHTTP");
			} catch(e) {
				try {
					req = new ActiveXObject("Microsoft.XMLHTTP");
				} catch(e) { }
			}
		}	
	  	
		if (req) {
			req.onreadystatechange = function() {
				completeAHAH.ahahDone(url, target, delay, method, parameters, req);
			}
			if ( ( method == undefined ) || ( method == "GET" ) || ( method == "get" ) ){
				req.open(method, url, true);
				req.send("");
			}
			if ( (method == "POST") || (method == "post") ){
				req.open(method, url, true);
				req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
				req.send(parameters);
			}
		}
	
	},
	
	creaDIV : function (target, html){

	   if (document.body.innerHTML){
			   document.getElementById(target).innerHTML = html;
	   }
	   else if (document.getElementById){
			   var element = document.getElementById(target);
			   var range = document.createRange();

			   range.selectNodeContents(element);
			   range.deleteContents();
			   element.appendChild(range.createContextualFragment(html));

	   }
	},

	ahahDone : function (url, target, delay, method, parameters, req) {		
		try {
			if (req.readyState == 4) { // la risposta del server alla richiesta ajax è avvenuta
				element = document.getElementById(target);
				if (req.status == 200) {
					this.creaDIV(target, req.responseText);  // risposta positiva, procede
					ahahEvalJS(target);
				} 		
			}
		} catch(e) { }
	},
	
	
	/*

	@@ parameters : 
	fileName	= name of your cgi or other
	method		= GET or POST, default is GET
	formName	= name of your form
	dynamicTarget	= name of your dynamic Target DIV or other

	@@ usage : 
	<form id="formName" action="javascript:completeAHAH.likeSubmit('fileName', 'method', 'formName', 'dynamicTarget');">

	*/

	likeSubmit : function ( file, method, formName, target ) {

		var the_form = document.getElementById(formName);
		var num = the_form.elements.length;
		var url = "";
		var radio_buttons = new Array();
		var nome_buttons = new Array();
		var check_buttons = new Array();

		// submit radio values
		var j = 0;
		var a = 0;
		for(var i=0; i<the_form.length; i++){
			var temp = the_form.elements[i].type;
			if ( (temp == "radio") && ( the_form.elements[i].checked) ) { 
				nome_buttons[a] = the_form.elements[i].name;
				radio_buttons[j] = the_form.elements[i].value; 
				j++; 
				a++;
			}
		}
		for(var k = 0; k < radio_buttons.length; k++) {
			url += nome_buttons[k] + "=" + radio_buttons[k] + "&";
		}

		// submit checkbox values
		var j = 0;
		var a = 0;
		for(var i=0; i<the_form.length; i++){
			var temp = the_form.elements[i].type;
			if ( (temp == "checkbox") && ( the_form.elements[i].checked) ) { 
				nome_buttons[a] = the_form.elements[i].name;
				check_buttons[j] = the_form.elements[i].value; 
				j++; 
				a++;
			}
		}
		for(var k = 0; k < check_buttons.length; k++) {
			url += nome_buttons[k] + "=" + check_buttons[k] + "&";
		}

		// submit all kind of input		
		for (var i = 0; i < num; i++){	
			var chiave = the_form.elements[i].name;
			var valore = the_form.elements[i].value;
			var tipo = the_form.elements[i].type;

			if ( (tipo == "submit") || (tipo == "radio") || (tipo == "checkbox") ){}
			else {
				url += chiave + "=" + valore + "&";
			}
		}

		var parameters = url;
		url = file + "?" + url;

		if (method == undefined) { 
			method = "GET"; 	
		}
		if (method == "GET") { 
			this.ahah(url, target, '', method, ''); 
		}
		else { 
			this.ahah(file, target, '', method, parameters); 
		}
	}

};