窗口moveBy() Method

function openWin() {
    myWindow = window.open('', '', 'width=200, height=100');    // Opens a new window
    myWindow.document.write("<p>This is 'myWindow'</p>");       // Some text in the new window
}

function moveWin() {
    myWindow.moveBy(250, 250);                                 // Moves the new window
    myWindow.focus();                                          // Sets focus to the new window
}

function moveWinTo() {
    myWindow.moveTo(150, 150);
    myWindow.focus();
}

function moveWinBy() {
    myWindow.moveBy(75, 50);
    myWindow.focus();
}