var registeredOnload = new Array();

function registerOnload(func) {
	registeredOnload.push(func);
}

window.onload = function() {
	for (var i = 0 ; i < registeredOnload.length ; i++) {
		registeredOnload[i]();
	}
}

var est_ie;

function get_ajax() {
	var ajax = false;
	
	try { // Firefox, Opera 8.0+, Safari
		ajax = new XMLHttpRequest();
	}
	catch (e) {
		est_ie = true;
		try { // Internet Explorer
			ajax = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
				ajax = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {
				ajax = false;
			}
		}
	}
	
	return ajax;
}