try {
	dojo.require("dojo.io.*");
} catch (e) {
	alert('You need the Dojo framework to enable the AjaxRequest class.');
}

function AjaxRequest(url)
{
	this.url = url;
	
	this.form = document.createElement('form');
	this.form.setAttribute('action', this.url);
	this.form.setAttribute('method', 'post');
}

AjaxRequest.prototype.setSingle = function(name, value)
{
	// Use input text element
	var inputElement = document.createElement('input');
	
	inputElement.setAttribute('type', 'text');
	inputElement.setAttribute('name', name);
	inputElement.setAttribute('value', value);
	
	this.form.appendChild(inputElement);
}

AjaxRequest.prototype.setMultiple = function(name, values)
{
	var optionElement;
	// use select multiple element
	var selectElement = document.createElement('select');
	
	selectElement.setAttribute('multiple', 'multiple');
	selectElement.setAttribute('name', name+'[]');
	
	try {
		if (values.length > 0) {
			for (var i = 0; i < values.length; i++) {
				if (values[i] == null || values[i] == 'undefined') {
					continue;
				}
				// create option element and attach it to the selectElement
				optionElement = document.createElement('option');
				optionElement.setAttribute('value', values[i]);
				optionElement.setAttribute('selected', 'selected');
				
				selectElement.appendChild(optionElement);
			}
		}
	} catch (e) {}
	
	this.form.appendChild(selectElement);
}

AjaxRequest.prototype.request = function(callbackFunctionName)
{
	// Attach the form
	var elementsTmp = document.getElementsByTagName('body');
	var bodyElement = elementsTmp[0];
	
	// Create invisible div to hide the form
	var divElement = document.createElement('div');
	divElement.style.display = 'none';
	
	divElement.appendChild(this.form);
	
	bodyElement.appendChild(divElement);
	
	dojo.io.bind ({
		url: this.url,
		load: callbackFunctionName,
		mimetype: "text/html",
		formNode: this.form
	});
}