<input type="text" id="YQNum" maxlength="50"/> <input type="button" value="TRACK" onclick="doTrack()"/> <div id="YQContainer"></div> <script type="text/javascript" src="//www.17track.net/externalcall.js"></script> <script type="text/javascript"> function doTrack() { var num = document.getElementById("YQNum").value; if(num===""){ alert("Enter your number."); return; } YQV5.trackSingle({ YQ_ContainerId:"YQContainer", YQ_Height:560, YQ_Fc:"0", YQ_Lang:"en", YQ_Num:num }); } </script>
