How to pass variables to HTML file. Study page source for working script

<script type="text/javascript"> // // Get variables from url address // Example URL: Test.htm?input=lat=long=address=country code // Example this page: http://www.replyat.com/Gadget_How_to_show_location.htm?input=40.1718=-105.105=Longmont, Colorado, United States=US // Here Lat = 40.1718, Long = -105.105, Address = Longmont, Colorado, United States and the country code ia US // Similarly any variable can be passed to a html file. // *** // Main trick is that you can redirect to this type of html page from ASP, Php etc along with variable values retrieved from any data source. // // Example ASP: Response.Redirect "DisplayMap.htm?input=" & lat & "=" & Long & "=" & address & "=" CountryCode // ******************************************************************** // Those who intend to use this script for their site are required to get the above map api code for their specific site. // Please don't forget to replace adsense publisher_id by your own code // var urlx = location.href ; var IDLEN = urlx.length; input = new Array(5); input[0] = '' ; input[1] = '' ; input[2] = '' ; input[3] = '' ; input[4] = '' ; var m = 0 ; for (i = 0; i < IDLEN ; i++ ) { CN = urlx.charAt(i); if (CN == '=') { m = m + 1; } else {input[m] = input[m] + CN ;} } if (input[1] == ''){input[1]="40.1718"; input[2]="-105.105"; input[3]="Longmont, Colorado, United States"; input[4]="US";}; // replace blank spaces in the address shown as %20 by actual blank spaces var xxx = input[3]; var yyy = xxx.split("%20").join(" "); input[3] = yyy; </script> <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false&libraries=adsense&key=AIzaSyA9Fp-zeZB-yQeiA8ARj1OlHCJxoI_0DPU"></script> <script type="text/javascript"> var map = null; function initialize() { var map = new google.maps.Map( document.getElementById('map_canvas'), { center: new google.maps.LatLng(input[1],input[2]), zoom: 4, mapTypeId: google.maps.MapTypeId.ROADMAP }); var marker = new google.maps.Marker({ position: new google.maps.LatLng(input[1],input[2]), map: map }); var htmlblock='<img src=http://www.replyat.com/ImagesFlagBig/'+input[4]+'.png /> <br /><strong>'+input[3]+'</strong>'; var infowindow = new google.maps.InfoWindow( { content: htmlblock , size: new google.maps.Size(50,50) }); infowindow.open(map,marker); } google.maps.event.addDomListener(window, 'load', initialize); </script>