var AJAX_READY = 4;

dameAjax = function() {

	var http_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		
		http_request = new XMLHttpRequest();
		
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('application/xml');
		}
		
	} else if (window.ActiveXObject) { // IE
	
		try {
			
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
			
		} catch (e) {
			
			try {
				
				http_request = new ActiveXObject("Microsoft.XMLHTTP");
				
			} catch (e) {
				
				alert('Error');
				
			}
		}
	}
	
	return http_request;
};