var dureeDefilement = 400;
var height=0;
var vitesse=0;
var topFin =0;

function slide(){
    $('#flash_info p').animate({
        top:'-'+topFin+'px'
    },vitesse,'linear', function(){
        $('#flash_info p').css('top','150px');
        slide();
    });
    
}

$(function(){
    
    height = $('#flash_info p').css('height');
    height = parseInt(height.substring(0,height.length-2));
    vitesse = (height)*dureeDefilement;
    topFin = (height+150);
    slide();
    
    $('.flash').click(function(e){
        $('#modif_flash').show(1000);
    });
    $('img.fermerflash').click(function(){
        $('#modif_flash').hide(1000);
    });
});