<!-- BEGIN ROLLOVER MENU -->

var rollOverArr	= new Array();

function setrollover(OverImgSrc,pageImageName) {
	if(!document.images) return;
	
	if(pageImageName == null) {
		pageImageName = document.images[document.images.length-1].name;
	}
	
	rollOverArr[pageImageName]				= new Object;
	rollOverArr[pageImageName].overImg 		= new Image;
	rollOverArr[pageImageName].overImg.src	= OverImgSrc;
}

function rollover(pageImageName) {
	if (!document.images) return;
	
	if (!rollOverArr[pageImageName]) return;
	
	if (!rollOverArr[pageImageName].outImg) {
		rollOverArr[pageImageName].outImg 		= new Image;
		rollOverArr[pageImageName].outImg.src 	= document.images[pageImageName].src;
	}
	
	document.images[pageImageName].src=rollOverArr[pageImageName].overImg.src;
}

function rollout(pageImageName) {
	if(!document.images) return;
	
	if(!rollOverArr[pageImageName]) return;
	
	document.images[pageImageName].src 			= rollOverArr[pageImageName].outImg.src;
}

<!-- END ROLLOVER MENU -->


<!-- FORM CHECK -->
function verifForm1() {
	if(f1.elements["fiche"].options.length == 0 
	   || f1.elements["fiche"].options[f1.elements["fiche"].selectedIndex].value == "") {
		alert("Choisissez la fiche thématique que vous souhaitez consulter...");
		f1.elements["fiche"].focus();
		return false;
	} else {
		PopupCentrer("/?page=tableau&location="+f1.elements["location"].options[f1.elements["location"].selectedIndex].value+"&fiche="+f1.elements["fiche"].options[f1.elements["fiche"].selectedIndex].value+"&t=1",850,600,"menubar=no,scrollbars=yes,statusbar=no");
		return false;
	}
}

function verifForm2() {
	PopupCentrer("/?page=tableau&location="+f2.elements["location"].options[f2.elements["location"].selectedIndex].value+"&fiche="+f2.elements["fiche"].value+"&I=1",850,600,"menubar=no,scrollbars=yes,statusbar=no");
	return false;
}

function PopupCentrer(page,largeur,hauteur,options) {
	var top=(screen.height-hauteur)/2;
	var left=(screen.width-largeur)/2;
	window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}
<!-- END FORM CHECK -->


<!-- BEGIN AJAX -->
function requestFiche(fiche) {
	requestAjax('./include/fiche.select.php', 'select='+f1.elements["location"].options[f1.elements["location"].selectedIndex].value+'&selected='+fiche);
}

function requestAjax(url, data) {
	var xhr_object = null;
	
	if(window.XMLHttpRequest) // Firefox
		xhr_object = new XMLHttpRequest();
	else if(window.ActiveXObject) // Internet Explorer
		xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
	else { // XMLHttpRequest non supportŽ par le navigateur
		alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
		return;
	}
	
	xhr_object.open("POST", url, true);
	
	xhr_object.onreadystatechange = function anonymous() {
		if(xhr_object.readyState == 4) {
			eval(xhr_object.responseText);
		}
	}
	
	xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xhr_object.send(data);
}
<!-- END AJAX -->