I'm using the ModalPopupExtender and inside the popup I have some textboxes for the user to fill out a form. When the user input wrong data in the textboxes I use the ValidatorCalloutExtender to show the errormessage for the user. My problem is that sometimes
the "blinking cursor" inside the textboxes just disapear. It seems to happen when I fill out the textboxes wrong so the ValidatorCalloutExtender is activated (but I'm not really sure). When I'm trying to click on a textboxes no "blinking cursor" appears. Anyone
got the same problem and have a clue on how to solve it?