problem in placing the cursor (focus) in the text box in IE 7

Hi

I am having 4 text box in a page. Among that 4 text box, 2nd and 3rd text box are date and it is the control to ajax calender.

In edit mode, I usedm to get the value from the data base and assign to these 4 text box and i place the cursor to the first text box.

It is working fine in all the other browser but in IE7, the cursor gets shifted from first to the 3rd text box automatically.

Here, the 2nd and 3rd textbox is for date.

Please let me know if any one have solution for this.