CSS div element – how to show horizontal scroll bars only?

I have a div container and have defined its style as follows:

div#tbl-container 
{
    width: 600px;   
    overflow: auto;    
    scrollbar-base-color:#ffeaff
}

This gives me both horizontal and vertical scroll bars automatically once I populate my table which is contained by this div.
I just want only horizontal scroll bars to appear automatically. I will modify the height of the table programmatically.

How do I do this?