$(document).ready(function() {  
    $(".signpost").mouseenter(function(){ ShowSignpostSummary($(this)); }).mouseleave(function(){ HideSignpostSummary($(this)); });
});
    
function ShowSignpostSummary(box)
{
    box.children(".details").animate({bottom:"0px"},600);
}
 
function HideSignpostSummary(box)
{
    box.children(".details").animate({bottom:"-100px"},600);
}