var request = false;
try {
	request = new XMLHttpRequest();
} catch (trymicrosoft) {
	try {
		request = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (othermicrosoft) {
	    try {
	      request = new ActiveXObject("Microsoft.XMLHTTP");
	    } catch (failed) {
	      request = false;
	    }
	}
}
if (!request)
  alert("Error initializing XMLHttpRequest!");	

function ShowBlock ( id, show ) {
	var elem = document.getElementById ( id );
	if ( !elem ) return;
	if ( show )
		elem.style.display = 'block';
	else
		elem.style.display = 'none';
}
function ShowMenu ( num, show ) {
	if ( show ) {
		var menu_id = 'menu-img'+num;
		var popup_id = 'popup'+num;
		document.getElementById ( menu_id ).src = '/images/menu'+num+'-hover.jpg';
		document.getElementById ( popup_id ).style.display = 'block';
	}
	else {
		var menu_id = 'menu-img'+num;
		var popup_id = 'popup'+num;
		document.getElementById ( menu_id ).src = '/images/menu'+num+'.jpg';
		document.getElementById ( popup_id ).style.display = 'none';
	}
}
function HideAll ( ) {
	document.getElementById ( 'main-button' ).style.display = 'none';
	document.getElementById ( 'main' ).style.display = 'none';
	document.getElementById ( 'icons' ).style.display = 'none';
	document.getElementById ( 'main-button2' ).style.display = 'block';
	document.getElementById ( 'main-button3' ).style.display = 'block';
}
function ShowAll ( ) {
	document.getElementById ( 'main-button' ).style.display = 'block';
	document.getElementById ( 'main' ).style.display = 'block';
	document.getElementById ( 'icons' ).style.display = 'block';
	document.getElementById ( 'main-button2' ).style.display = 'none';
	document.getElementById ( 'main-button3' ).style.display = 'none';
}