试一试这个:
var oPopup = window.createPopup();
var oPopBody = oPopup.document.body;
oPopBody.style.backgroundColor = "lightyellow";
oPopBody.style.border = "solid black 1px";
oPopBody.innerHTML = "your HTML in the Screen to show";
oPopup.show(0, 0, screen.width, screen.height, document.body);