var site = 'http://www.cemea.asso.fr/festival-lyceens-apprentis';

function targetLinks() {
var str;
var where;
where="_blank";

for(var i=0;i<=(document.links.length-1);i++) {
 str=document.links[i].href;
 if((str.search(site)==-1)&&((str.search('http://')!=-1)
 ||(str.search('www.')!=-1)
 ||(str.search('ftp://')!=-1))){
  document.links[i].target=where;
 }
}
}



function rand_number(n)
{
        var x;
        x=Math.round(Math.random()*100);
        x%=n;
        return x;
}

function boucle_images()
{
        var i;
        var img = new Array();

        img[0]='<img src="images/bandeau1.jpg">';
        img[1]='<img src="images/bandeau2.jpg">';
        img[2]='<img src="images/bandeau3.jpg">';
        img[3]='<img src="images/bandeau4.jpg">';

        var nombre_total_images = img.length;
        var i=rand_number(nombre_total_images);
        boucle.innerHTML=img[i];
}


// Menu dynamique
function montre(id) {
	  if (document.getElementById) {
		  document.getElementById(id).style.display="block";
		} else if (document.all) {
		  document.all[id].style.display="block";
		} else if (document.layers) {
		  document.layers[id].display="block";
		} } 

 function cache(id) {
	  if (document.getElementById) {
		  document.getElementById(id).style.display="none";
		} else if (document.all) {
		  document.all[id].style.display="none";
		} else if (document.layers) {
		  document.layers[id].display="none";
		} }