var bOverlayOpen;
var iWidth = 720;
var bUseCookie=true;

function openOverlay(){
	var sAlreadySee = getCookie('OverlayAnimDisplay');
	if( sAlreadySee=="1" && bUseCookie ){
		bOverlayOpen = false;
	}else{
		bOverlayOpen = true;
		setSelectVisiblity('hidden');
		refreshOverlay();
		window.onscroll = refreshOverlay
		window.onresize = refreshOverlay
		setCookie('OverlayAnimDisplay','1',null);
	}
}
function closeOverlay(){
	setSelectVisiblity('visible')
	var oBackground = document.getElementById("overlay-background");
	var oWindow = document.getElementById("overlay-window");
	oBackground.style.display="none";
	oWindow.style.display="none";
	bOverlayOpen = false;
}
function refreshOverlay(){
	
	if(! bOverlayOpen) return;
	
	var oBackground = document.getElementById("overlay-background");
	var oWindow = document.getElementById("overlay-window");
	
	oBackground.style.top = document.documentElement.scrollTop+"px";
	oBackground.style.width =  document.documentElement.clientWidth+"px";
	oBackground.style.height = document.documentElement.clientHeight+"px";
	oBackground.style.display="block";
	
	oWindow.style.top = document.documentElement.scrollTop+"px";
	oWindow.style.width =  iWidth+"px";
	oWindow.style.marginLeft =  ((document.documentElement.clientWidth-iWidth)/2)+"px";
	oWindow.style.display="block";
} 
function setSelectVisiblity(sNewVis){
	var i,j;
	for(i=0;i<document.forms.length;i++)
		for(j=0;j<document.forms[i].elements.length;j++)
			if( document.forms[i].elements[j].tagName=="SELECT")  document.forms[i].elements[j].style.visibility=sNewVis

}
function getCookie(c_name){
	if (document.cookie.length>0) {
	c_start=document.cookie.indexOf(c_name + "=");
	if (c_start!=-1) { 
		c_start=c_start + c_name.length+1; 
		c_end=document.cookie.indexOf(";",c_start);
		if (c_end==-1) c_end=document.cookie.length;
		return unescape(document.cookie.substring(c_start,c_end));
	} 
	}
	return "";
}
function setCookie(c_name,value,expiredays){
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+
	((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}
function ShowFlash(swf, largeur, hauteur,flashvars, alternatif)
{
		    document.write('<object type="application/x-shockwave-flash" data="'+swf+'" width="'+ largeur +'" height="'+ hauteur +'">');
		    document.write('<param name="allowScriptAccess" value="sameDomain" />');
		    document.write('<param name="movie" value="'+swf+'" />');
		    document.write('<param name="flashvars" value="'+flashvars+'" />');
		    document.write('<param name="quality" value="hight" />');
		    document.write('<param name="WMode" value="Transparent" />');          
		    document.write(alternatif);
		    document.write('</object>');
}