I am using VS 2010 for developing a web application. I used modal popup for adding/editing some information in page and the panel have the property \[code\]visible = false\[/code\] or style \[code\]display: none\[/code\]. But when page is loading at that time all the pop up is appearing for a time being and then it is disappearing.So how can I avoid the appearing/disappearing of the popup while page loading?