var next = alea+1;
var nextmax = 7;
if(next>nextmax)next=1;

function changeBG(nb){	
	$('#bg_nav div').css({background:'white'});
	$('#bg_'+nb).css({background:'#9ebe21'});
	var newsrc ="images/fond/bg_"+nb+".jpg";
	$('#triquibackimg').fadeOut(400, function(){
		$(this).attr('src',newsrc);
		if (this.complete) $(this).fadeIn(400);
	});
	next++;
	if(next>nextmax)next=1;
}
var mytimer = setInterval("changeBG(next)",5000);


function MM_preloadImages() { //v3.0
	var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
	var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
	if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src="images/"+a[i];}}
}