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Hi, I have a php script that generates a select dropdown box <option value="1"> Bob </option> <option value="2"> Tim </option> <option value="3"> Sam </option> <option value="4"> Phil </option> I then have the following javascript to produce my google api graph: <script type="text/javascript"> google.load('visualization', '1', {'packages':['corechart']}); google.setOnLoadCallback(drawChart); function drawChart() { var jsonData = $.ajax({ url: "test1.php", dataType:"json", async: false, }).responseText; var data = new google.visualization.DataTable(jsonData); var chart = new google.visualization.LineChart(document.getElementById('chart_div')); chart.draw(data); } </script> This then runs a php script that returns the data back in Json format. How can I pass the <option value=""> through the to the test1.php script to generate the json data based on the the value selected i.e 1, 2, 3 etc. i an new at javascript and the google api can anyone let me know how I can get this variable sent through by the google api script. and for the graph to refresh every time another option is chosen. Thanks kris
