Typeerror: 'null' is not an object (evaluating 'content.offsetx')

I’m using a left side menu and when i run on my iphone 4 ios 7 i get this error when i click a navigation link

typeerror: ‘null’ is not an object (evaluating ‘content.offsetx’)

the side menu doesn’t close and you cannot navigate to the view

I have some issue nobody no why ???