How i frame showthread template with out this problem ?

[fourat]

hi
i want a help about framing showthread template
when i trying to frame it , its look like that

http://img221.imageshack.us/img221/8551/5656jj6.gif

how i can fix this problem ?

my vbulletin version is 3.7.3

the edited showthread in attachment

i asked here but there is no help
http://www.vbulletin.com/forum/showthread.php?t=290063

[fourat]

up ..........