jquery - .slideToggle() Causes Height Issues for Bottom Div -

i've been trying solve problem day, no luck far. feel know do, can't seem write code. using slidetoggle() show/hide set of options. however, when hide options, div @ bottom changes height. can not make happen? want height remain same.

my guess need make slidetoggle() function , use if/else statement, can't seem figure out.

please see working example @ jsfiddle have far.

any suggestions? help.

make position:absolute , give top value

fiddle

#radio-buttons {     width: 288px;     height: 20px;     font-size: 11px;     border-right: 1px solid #bcbcbc;     border-bottom: 1px solid #bcbcbc;     float: left;     background: #fff;     padding: 6px;     position:absolute;     top:35px;  }  #box-below {     width: 300px;     height: 200px;     border-right: 1px solid #8d8d8d;     border-bottom: 1px solid #8d8d8d;     /*removed float*/ }