※依可視內容的高度，調整iframe視窗的高度

※依可視內容的高度，調整iframe視窗的高度

function reSize(i) {

    var viewportwidth;

    var viewportheight;

    // the more standards compliant browsers (mozilla/netscape/opera/IE7) use window.innerWidth and window.innerHeight

    if (typeof window.innerWidth != 'undefined') {

        viewportwidth = window.innerWidth, viewportheight = window.innerHeight

    }

    // IE6 in standards compliant mode (i.e. with a valid doctype as the first line in the document)

    else if (typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth != 'undefined' && document.documentElement.clientWidth != 0) {

        viewportwidth = document.documentElement.clientWidth, viewportheight = document.documentElement.clientHeight

    }

    // older versions of IE

    else {

        viewportwidth = document.getElementsByTagName('body')[0].clientWidth, viewportheight = document.getElementsByTagName('body')[0].clientHeight

    }

    alert('<p>Your viewport width is ' + viewportwidth + 'x' + viewportheight + '</p>');

}

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