Help: IE display problem of 1.4.7

[camel2]

My store front has a display problem in IE. The "new" and "sale" overlay pictures are not displayed in proper position in product-list under IE, It's ok in Chrome,Firefox and Safari.

 

http://www.infomast.ca/11-case-cover-samsung-galaxy-sii

 

But it's ok in featured product list of homepage in IE.

 

Both places use the same css style in global.css. I realy don't know why they get different results.

 

Please give me some ideas and how to solve this.

 

Thank you.