I added large close and confirm buttons to the default stickyWinHTML layout. You can make them read whatever you want and you can assign callback functions to them getting clicked. They are optional, and not visible by default. Note the section in the link above about how the onClose event is NOT the same as the onClose event for StickyWin.

That little "x" for closing the StickyWin is pretty small, and on pages like in our CMS, I think an easier to click close button would make it easier to deal with these things, especially if you end up opening them often. If you don't specify a closeTxt or confirmTxt value, the buttons are not there. The callbacks are not required. Example:

JavaScript:
new StickyWin({
  content: stickyWinHTML('the caption', 'this is the body', {
    width: '400px',
    closeTxt: 'close',
    confirmTxt: 'okey-dokey',
    onClose: function(){alert('closed!')},
    onConfirm: function(){alert('confirmed')}
})});
new StickyWin({
content: stickyWinHTML('the caption', 'this is the body', {
width: '400px',
closeTxt: 'close',
confirmTxt: 'okey-dokey',
onClose: function(){alert('closed!')},
onConfirm: function(){alert('confirmed')}
})});

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