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ä¯ÀÀÆ÷ÒÔ¼°²Ù×÷ϵͳµÄÅбð±äÁ¿  navigator.userAgent navigator.platform
var sUserAgent = navigator.userAgent;
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var isOpera = sUserAgent.indexOf("Opera") > -1;
var isKHTML = sUserAgent.indexOf("KHTML") > -1 || sUserAgent.indexOf("Konqueror") > -1 || sUserAgent.indexOf("AppleWebKit") > -1;
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var isIE = sUserAgent.indexOf("compatible") > -1 && sUserAgent.indexOf("MSIE") > -1 && !isOpera;
var isMoz = sUserAgent.indexOf("Gecko") > -1 && !isKHTML;
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//navigator.platform
var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh");
var isUnix = (navigator.platform == "X11") && !isWin && !isMac;
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function TreeConfig() {
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    this.showCheckBox = false;
    this.checkBoxName = "_TREE_CHECKBOX_";
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