/* **************************************************************************** */
/*      Défilement de haut en bas*/
/* **************************************************************************** */
var file
var nbre
var ecart_base
var start=0;
var choix=0;
var fincycle=0;
	var whatid='pict';
function stopit()
{
	

	document.getElementById('fly_box').style.display='none';
}
function startit()
{
	document.getElementById('fly_box').style.display='block';

}
function glisseter(dossier,nbre_img) {
Nom = navigator.appName;

	nbre=nbre_img;
	file=dossier;
	var fin=500;

	var vita=1/2; 

	if (Nom == 'Microsoft Internet Explorer') {vita=3; } else {vita=1/2;}
	
	
	ecart_base=0;
	if(choix<nbre) 
		{choix++;
		
		document.getElementById(whatid).src='images/fly_picture/'+file+'/'+choix+'.jpg';
		
		} 
	else {
		choix=1;document.getElementById(whatid).src='images/fly_picture/'+file+'/'+choix+'.jpg';
		}
	
	document.getElementById(whatid).style.display='block';
	document.getElementById(whatid).style.opacity=0;
	document.getElementById(whatid).style.filter="alpha(opacity="+0+")";

setTimeout('slidebytop ("'+whatid+'",'+start+','+fin+','+vita+')',2000);


	
}
function slidebytop(what, ecart_base, arrivee, sens) {
	
	var fin_top=arrivee-150;
	var debut_top=100;
	var elmt = document.getElementById(what);
	var op1;
	
	if((ecart_base<fin_top)&&(ecart_base<debut_top)) {
		
		ecart_base += 2*sens;
		elmt.style.marginTop = ecart_base+'px';	
		op1=ecart_base;
	
			if(op1<=85)
			{
				
				document.getElementById(what).style.opacity=(op1)*0.01;
				document.getElementById(what).style.filter="alpha(opacity="+op1+")";
			}
		
	}
	if((ecart_base<fin_top)&&(ecart_base>=debut_top)) {
		
		ecart_base += 2*sens;
		elmt.style.marginTop = ecart_base+'px';
		
		
		
	}

	
	if((ecart_base>=fin_top)&&(ecart_base<arrivee)) {
		var op3;
		ecart_base += 2*sens;
		elmt.style.marginTop = ecart_base+'px';	
		

		
		op3=((-1*ecart_base)+450);
		
			if(op3>-5)
			{
				document.getElementById(what).style.opacity=(op3)*0.01;
				document.getElementById(what).style.filter="alpha(opacity="+1*op3+")";
			}
		
	}
	if (ecart_base>=arrivee)
	{
		glisseter(file,nbre);return;
	}
	setTimeout('slidebytop ("'+what+'",'+ecart_base+','+arrivee+','+sens+')',0);

}