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(function() {
if (window.__twitterIntentHandler) return;
var intentRegex = /twitter\.com(\:\d{2,4})?\/intent\/(\w+)/,
windowOptions = 'scrollbars=yes,resizable=yes,toolbar=no,location=yes',
width = 550,
height = 420,
winHeight = screen.height,
winWidth = screen.width;
function handleIntent(e) {
e = e || window.event;
var target = e.target || e.srcElement,
m, left, top;
while (target && target.nodeName.toLowerCase() !== 'a') {
target = target.parentNode;
}
if (target && target.nodeName.toLowerCase() === 'a' && target.href) {
m = target.href.match(intentRegex);
if (m) {
left = Math.round((winWidth / 2) - (width / 2));
top = 0;
if (winHeight > height) {
top = Math.round((winHeight / 2) - (height / 2));
}
window.open(target.href, 'intent', windowOptions + ',width=' + width +
',height=' + height + ',left=' + left + ',top=' + top);
e.returnValue = false;
e.preventDefault && e.preventDefault();
}
}
}
if (document.addEventListener) {
document.addEventListener('click', handleIntent, false);
} else if (document.attachEvent) {
document.attachEvent('onclick', handleIntent);
}
window.__twitterIntentHandler = true;
}());
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