var temps_transition=2000;
var niveaux_transition=20;
var temps_affichage=4000;
var largeur_image='223px';
var hauteur_image='126px';

var banner = new Array();

banner.push('http://i40.tinypic.com/vsneax.jpg');
banner.push('http://i44.tinypic.com/intpjs.jpg');
banner.push('http://i40.tinypic.com/i52i2o.jpg');
banner.push('http://i39.tinypic.com/5cx1yh.jpg');



function change(link) { opn=1; decrease(); } 
function ch_opacity(object,opacity) {
	object.style.opacity=(opacity/100);
	object.style.MozOpacity=(opacity/100);
	object.style.KhtmlOpacity=(opacity/100);
	object.style.filter='alpha(opacity='+opacity+')'; 
}
function decrease() { 
	if(opn<=niveaux_transition) {
		ch_opacity(i1,100-100*opn/niveaux_transition);
		ch_opacity(i2,100*opn++/niveaux_transition);
		setTimeout("decrease();",temps_transition/niveaux_transition); 
} 
else { 
	while((temp=banner[Math.floor(Math.random()*banner.length)])==i2.src);
		i1.setAttribute("src",temp); 
		i3=i1; i1=i2; i2=i3; 
		setTimeout("change();",temps_affichage); 
} } 
var temp; 
var i1=document.getElementById('i_logo');
ch_opacity(i1,100); 
i1.style.position='absolute'; 
i1.style.top=0; i1.style.left=0; 
i1.parentNode.style.width=largeur_image; 
i1.parentNode.style.height=hauteur_image; 
var i2=document.createElement("img"); 
ch_opacity(i2,0);
i2.style.position='absolute';
while((temp=banner[Math.floor(Math.random()*banner.length)])==i1.src); 
	i2.setAttribute("src",temp); 
	i2.style.top=0; 
	i2.style.left=0; 
	i1.parentNode.appendChild(i2); 
	opn=niveaux_transition+1; 
	if(banner.length>1)setTimeout("change();",temps_affichage);