//function to allow more than one window.onload event
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

//OpenClose
function OpenClose(id) {
	var element = document.getElementById(id);
	if (element.style.display != 'block') {
		element.style.display = 'block';
	}
	else {
		element.style.display = 'none';
	}
}