function limitHeight(){
    var tab = new Array();
    tab = getElementsByClass('realisation');

    for(var i=0; i<tab.length; i++){
        var img = new Image();
        img.src = tab[i].src;
        var width = img.width;
        var height = img.height;
        if(height > width){
            tab[i].style.height = '149px';
        }
        else{
            tab[i].style.width = '200px';
        }
    }
	
}

addEvent(window,'load',limitHeight);

$("a.lightbox").lightBox();