If you can't provide link to page where we can see the problem, send page files of the page with the menu by email. This process is described here.

Regards,
ARI Soft

Dear admin, my problem was solved. Thanks very much about your attention and useful forum. I tried to gratitude your work before using this link (last post)
www.ari-soft.com/ARI-YUI-Menu/15280-Empty-Space-in-Vertical-Menu/Page-2.html#15355

Dear Admin, Thanks for paying attention,
just in horizontal mode, using IE 7 the sub-menu doesn't show just the bottom of each parent's one. in fact the sub-menu tend to show at the bottom-right instead of just bottom of each parent's menu.

please check the site again using IE 7: in second item of Horizontal menu (from the right), "Joomla Overview"'s sub-menu tend to bottom-right (instead of just bottom).
Click Here to view

You have added incorrect custom CSS rules:



It should be:



Regards,
ARI Soft

Dear Admin;
you are completely right; Excuse-me for kidding mistake, maybe excitement was caused that!
but unfortunately seems that this correction couldn't get it right! and the problem already exist using IE 7.
I change the code like bellow:

.yui-skin-sam .yuimenu .yuimenuitem
{
position: relative;
}
.yui-skin-sam .yuimenu .yuimenu
{
right: 0 !important;
margin-right: 100%;
}
.yui-skin-sam .yuimenu .yuimenuitem
{
zoom: 1;
}


how ever i try just the second and third block (like bellow):
.yui-skin-sam .yuimenu .yuimenu
{
right: 0 !important;
margin-right: 100%;
}
.yui-skin-sam .yuimenu .yuimenuitem
{
zoom: 1;
}

unfortunately no one took effect!
I try to write the code carefully once again and review it three time; you may want to trace my code, how ever I hope there would be existed a solution to solve that.
You could use again the link bellow to visit it using IE 7. all the Horizontal sub-menu' alignment don't take effect (like the pics in my last posts)
Click Here to view
Thanks, Regards.

Try to add the next CSS rules:



Regards,
ARI Soft