Make sure offsets are integers

[fblundun]

Bad querystring:

https://xxxxxxxxxxxxxxxxxx/tMozilla%2F5.0+%28Windows+NT+6.3%3B+WOW64%29+AppleWebKit%2F537.36+%28KHTML%2C+like+Gecko%29+Chrome%2F39.0.2171.65+Safari%2F537.36/te=pp&url=https%3A%2F%2Fxxxxxxxxxxx%2Fuk&page=xxxxxxxxxxxx&pp_mix=0&pp_max=0&pp_miy=989.3333&pp_may=989.3333&tv=js-2.1.1&tna=xxx&aid=xxxx&p=web&tz=Europe%2FLondon&lang=en-GB&cs=UTF-8&f_pdf=1&f_qt=0&f_realp=0&f_wma=0&f_dir=0&f_fla=1&f_java=1&f_gears=0&f_ag=0&res=1600x900&cd=24&cookie=1...

Error messages:

Field[pp_miy]: cannot convert [989.3333] to Int","Field [pp_may]: cannot convert [989.3333] to Int"

[alexanderdean]

Scheduling...