[EpgSelection] fix for graphical issues on EPG_TYPE_GRAPH and EPG_TYPE_I...

...NFOBARGRAPH

![screen-graphepg_failure_01](https://cloud.githubusercontent.com/assets/5672846/4965999/f42fbcb8-67a5-11e4-9795-6c3153f3f57f.jpg)
![screen-graphepg_failure_02](https://cloud.githubusercontent.com/assets/5672846/4966000/fa05bca0-67a5-11e4-9ede-55ff9b5e1e4b.jpg)