Template. Modifying Compose window view

Hi people,

currently i am modifying the look and feel of the compose window by designing my own template.

i have added some combo boxes below the suject header in the compose mail window.However, when i open compose new mail window sometimes, the combo box cannot be seen, i have to drag down and increase the size of the header (containing the fields “To”, “CC”, “BCC”, “Subject”) border before my combo boxes are revealed.

is there any way i can solve this problem? Thanks alot.