"Please Wait" mask goes behind webdialogwindow popup

We have a Javascript div shown on PostBack on page to show a "Please wait" indicator in the asp.net application. There were few requirements where we had to include a Pop up . This pop up is the Infragistics Web Dialog window. When there is a postback on page I get the "Pkease Wait" but when there is a postback on Pop up - The "please wait" div is always behind the po开发者_C百科p up and User cannot see. Any ideas on how to solve this issue?

One thing you could do is to change its z-index to the maximum z-index value to ensure its on the top.