jQuery(function (){
	// 
	if (history && history.pushState && history.state !== undefined) {
		var BbackH = window.innerHeight;
		console.log('history ok');
		//
		history.pushState(null, null, null);
		if (/iP(hone|od|ad)/.test(navigator.userAgent)) {
			var osv = (navigator.appVersion).match(/OS (\d+)_(\d+)_?(\d+)?/);
			if(osv[1] <= 9){
				HistoryTime();
			}else {
				HistoryShow = true;
			}
		}else {
			HistoryShow = true;
		}
		function HistoryTime() {
			window.onload = function(){
				setTimeout(function(){
					console.log('histrytime show');
					HistoryShow = true;
				},500);
			}
		}
		window.addEventListener('popstate', function () {
			if(HistoryShow){
				jQuery('body').css({'position':'fixed','width':'100%'});
				jQuery('#back').css('min-height',BbackH).show();
				jQuery('#back_box,#back_boxx').show().animate({left:'50%',opacity:'1'},500);
				jQuery('#back_box .back_btn').css({'background': backBg,'border-color':backBorder,'color':backBorder});
			}
		}, false);
	}
});