$(document).ready(function(){
			EcranHaut = screen.height;
			EcranLarg = screen.width;
			resolution = EcranLarg+EcranHaut;
			if(resolution<1880){
				$("#diaporama").next('div').addClass('resol1');
			}
			else{
				$("#diaporama").next('div').addClass('resol2');
			}
});