function getClient(){
	var curentHost = window.location.protocol + '//' + window.location.host;
	var clientURL = curentHost + '/download.html?n=' + Math.random();
	if(clientURL){
		$('#elevator-app-url0').val(clientURL);
		getQrcode('elevator-app-qrcode0','elevator-app-url0');
		function getQrcode(ele1,ele2){
			var qrcode = new QRCode(document.getElementById(ele1), {
				width: 108,
				height: 108
			});
			var elText = document.getElementById(ele2);
			qrcode.makeCode(elText.value);
		}	
	}
}