µãµãµÎµÎ(JavaScript)

½ûֹѡÔñ
    unselectable="on"(off): IE/Opera
    style="-moz-user-select:none": FireFox(JS:element.style.MozUserSelect = "none";)
    style="-khtml-user-select:none": Safari(JS:element.style.KhtmlUserSelect)
    onselectstart="return false": IE
È¡ÏûÑ¡Ôñ
    if(document.selection && document.selection.clear) document.selection.clear(); // IE
    else if(window.getSelection && window.getSelection().removeAllRanges) window.getSelection().removeAllRanges(); // FireFox/Opera/Safari
µ±Ç°½¹µãÊÇÄĸö¿Ø¼þ
    document.activeElement // IE, FF3.0+
»ñÈ¡ÑùʽµÄʵ¼ÊÊôÐÔÖµ
    IE: ¶ÔÏó.currentStyle.ÐèÒª·ÃÎʵÄÊôÐÔ
    W3C: window.getComputedStyle("¶ÔÏó",null).ÐèÒª·ÃÎʵÄÊôÐÔ(µÚ2¸ö²ÎÊýΪαԪËØ,Èç:hover,:first-letter,:beforeµÈ,ÊDZØÐëµÄ)
    function getStyle(element, style){
        var strValue = "";
        if(document.defaultView && document.defaultView.getComputedStyle){
            strValue = document.defaultView.getComputedStyle(element, "").getPropertyValue(strCssRule);
        }
        else if(element.currentStyle){
            strCssRule = strCssRule.replace(/\-(\w)/g, function (strMatch, p1){
                return p1.toUpperCase();
            });
            strValue = element.currentStyle[strCssRule];
        }
 &