function swapLayer(div) {
var myDiv = document.getElementById(div);
   if (myDiv.style.display == "none") {
       myDiv.style.display = "block";
   }
   else {
       myDiv.style.display = "none";
   }
}

function bookmark(){
	title = "| Ping Pong Promotion |";
	url = "http://www.pingpong.fr";
	if (document.all){
		window.external.AddFavorite(url, title);
	}
	else if (window.sidebar){
		window.sidebar.addPanel(title, url, "")
	}
}

function validate(form){
	if ((form.email.value == " VOTRE E-MAIL")||(form.email.value == "")) {
		alert ("Vous devez indiquer votre e-mail !");
		form.email.focus();
		return false;
	}
	if (form.email.value.indexOf('@', 0) == -1 || 
    form.email.value.indexOf('.', 0) == -1 ||
	form.email.value.length < 6) {
		alert ("L'adresse e-mail que vous avez saisi n'est pas valide !")
		form.email.focus();
		return false;
	}
}

function pageScrollToTop(){
	var speed1 = 2;
	var speed2 = 5;
	var sec = 20;
	var y;
	var cy;
	var gy = 0;
	var scrollEngine;
	if(document.all){
		cy = document.body.scrollTop;
	}else if(document.layers || document.getElementById){
		cy = pageYOffset;
	}
	y = cy-gy;
	if(Math.abs(y)>50){
		cy = Math.round(cy-(y/speed1));
		window.scroll(0,cy);
		scrollEngine = setTimeout("pageScrollToTop()",sec);	
	}else if(Math.abs(y)>2){
		cy = Math.round(cy-(y/speed2));
		window.scroll(0,cy);
		scrollEngine = setTimeout("pageScrollToTop()",sec);	
	}else{
		window.scroll(0,0);
		clearTimeout(scrollEngine);
	}
}

// ENLEVE LE FOCUS SUR LES LIENS
function blurLinks()
{
	lnks = document.getElementsByTagName('a');
	for (i = 0; i < lnks.length; i++)
	{
		lnks[i].onfocus = new Function("if(this.blur) this.blur()");
	}
	
	lnks2 = document.getElementsByTagName('area');
	for (j = 0; j < lnks2.length; j++)
	{
		lnks2[j].onfocus = new Function("if(this.blur) this.blur()");
	}
}