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“The first script's job is to check the browser type, os etc. The function navigator.userAgent.toLowerCase() checks whether it is opera, msie,mac,gecko,safari,palmsource,regking,windows ce,avantgo,stb,pda; sony/com2 etc. Script 2 calculates the round trip time for a 1 pixel image. This is for detremining the internet speed of the user:
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