sina.base_other.js

STK.register("core.dom.contains", function (a) {
    return function (a, b) {
        if (a === b)return!1;
        if (a.compareDocumentPosition)return(a.compareDocumentPosition(b) & 16) === 16;
        if (a.contains && b.nodeType === 1)return a.contains(b);
        while (b = b.parentNode)if (a === b)return!0;
        return!1
    }
});