Products not showing in safari, firefox or IE. What gives?

I really need help with this issue which has been plaguing me for the past 3 days. I have not gotten an answer and really need to settle this with a client. Google Chrome displays all the products in the category layout, but IE, Firefox and Safari only shows 3 of the items available. Please can anyone help. The url is http://www.jesstshoes.com

I fixed it.. anyone having this problem, make sure your shopper groups are set correctly. I had to set mine to anonymous