How to avoid two finger scroll in iphone?

I have vertical scroll bar inside of my web page. When i run this web site in iphone, I have to use two finger to scroll the content. Is there any way to fix this problem? The content needs to be scroll by using single finger.

I have a code like this

开发者_运维技巧<div style="height:600px; overflow:scroll">
Content goes here
</div>

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You can use a scrolling library like TouchScroll or iScroll. iScroll has more features, but having tried both in a production application, I found TouchScroll performed more reliably.