Change results per page in google custom search engine

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Javascript

Google

jQuery

I have used google custom search engine and i want to change the results displaying on each page.
Basically i want this because every time use google custom search in my site it shows some extra space below results i want to remove this space
Url for this is
http://lexusindia.in/home/SearchNetInfo.aspx?cx=013436282623025984026:jxzgr_zsqli&cof=FORID%3A11&q=helium[^]