function setEqualHeight(columns, min){
    var tallestcolumn = 0;
    columns.each(function(){
        currentHeight = $(this).height();
        if(currentHeight > tallestcolumn){
            tallestcolumn = currentHeight;
        }
    });
    if(tallestcolumn<min)
        tallestcolumn=min;
    columns.height(tallestcolumn);

    return tallestcolumn;
}