I have a function on a page (ASP.NET) that calls another as a popup:
BtnFinalize.OnClientClick="javascript: DisplayPopupMobile ('/ ShoppingCart / Form.aspx', 900,580); return false;";
Using Chrome is coming correct, centered on the page, but if using Firefox is different, it's being applied to a div that controls everything ID="colorbox"
How could I set a browser-independent default value
element.style {
display: block;
visibility: visible;
top: 42px;
left: 502px;
position: fixed;
width: 900px;
height: 580px;
overflow: hidden;
}