On my system modal popups no longer work in Chrome or Firefox after upgrading the JQuery component. The application is Webform and has several popups and it is essential that they be modal. What's the alternative to the code below?
var ReturnValue = window.showModalDialog("/Popups/Cancelados/frmConPesPCanc1.aspx?doc=" + cgc + "&txAnos=" + slAnos, "", "dialogHeight: 600px; dialogWidth:1000px; dialogTop: 50px; edge: Raised; center: Yes; help: No; resizable: Yes; status: No;");