(function (doc, win) {
        var docEl = doc.documentElement,
        resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
        recalc = function () {
        var clientWidth = docEl.clientWidth;
        if (!clientWidth) return;
                docEl.style.fontSize = 100 * (clientWidth / 750) + 'px';
        };
        if (!doc.addEventListener) return;
                win.addEventListener(resizeEvt, recalc, false);
                doc.addEventListener('DOMContentLoaded', recalc, false);
})(document, window);

function getQueryString() {
        var url = location.href; //获取url中"?"符后的字串
        url = decodeURI(url);
        var theRequest = new Object();
        if (url.indexOf("?") != -1) {
                url = url.substring(url.indexOf("?")+1);
                var str = url;
                strs = str.split("&");
                for(var i = 0; i < strs.length; i ++) {
                        theRequest[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);
                }
        }
        return theRequest;
};