function showItem(id, toHide) {
	var d = document.getElementById(id);
	if (d) {
		d.style.display='block';
	}
	hideItem(toHide);
}

function gotoItem(id) {
	var d = document.getElementById(id);
	hideItem('mmbd');
	hideItem('auteurs');
	hideItem('screens');
	if (d) {
		d.style.display='block';
	}
}
function nextInstall(nb) {
	var d = document.getElementById('install');
	if (d) {
		d.style.backgroundImage='url(images/setup'+nb+'.jpg)';
	}
}
function hideItem(id) {
	var d = document.getElementById(id);
	if (d) {
		d.style.display='none';
	}
}
function writeCenterContent(texte)
{
	document.getElementById('center').innerHTML = texte;
}
function generateContent(page) {
	texte = file(page+'.php')
   writeCenterContent(texte);
}
function file(page)
{
	if(window.XMLHttpRequest) // FIREFOX
	    xhr_object = new XMLHttpRequest(); 
	else if(window.ActiveXObject) // IE
	    xhr_object = new ActiveXObject("Microsoft.XMLHTTP"); 
	else 
	    return(false); 
	xhr_object.open("GET", page, false); 
	xhr_object.send(null); 
	if(xhr_object.readyState == 4) return(xhr_object.responseText);
	else return(false);
}