Try out with this:
$.ajax({
type:"GET",
url:"fun_action.php",
data:{strtdt:strtdt,enddt:enddt,crg:crg},
success:function(data){
location.reload();
document.getElementById('hidden').show();
}
});
If you want that to be animated then you can try with jquery animate.
$("#hidden").animate({
});
Chere here
Jquery Animate[
^]
Hope this helps.
Post back your queries if any.
Thanks