function vAlignBloc(bloc) {
	var ah = $(bloc).height();
	var ph = $(bloc).parent().height();
	var mh = ((ph - ah) / 2)-15;
	if(mh<0)mh = 0;
	$(bloc).css('top', mh);
	$('#topBan').css('height',mh);
	var height = ($(window).height()-(mh+$('#main').outerHeight()));
	$('#bottomBan').css('height',height);
	$('#bottomBan').css('top',($(window).height()-(height+$('#bline').outerHeight())));	
}