如果父元素也有mouseover，那么如何为子元素设置mouseover事件火灾?

I have a "help" area on my page and anytime the user hovers over a table the help information should be updated. The problem is within the table I have a check box in 1 cell of each row, and when the user hovers over that checkbox I want the mouseover event of the checkbox to override the table event and for the checkbox help to be displayed. Currently the table mouseover works fine but nothing happens when I mouse over the checkbox. I have a "help" area on my page and anytime the