async update without location reload

Question

I have a script that loads XML data, and depending on a select statement, it loads certain records. I found that issuing a location.reload() at the onchange, actually refreshes everything, and the data is loaded correctly. Although, it doesn't work that way in Chrome. It simply return the selected item to its default state.

I've read about async update, and I wonder if this can be used here.

This is my select, in JS, since is the way I found to load the XML items as options:

xmlhttp=new XMLHttpRequest();
xmlhttp.open("GET","line-perf.xml",false);
xmlhttp.send();
xmlDoc=xmlhttp.responseXML;
document.write("<form name='lineForm'><div class='line-sel'>Line: ");
var x=xmlDoc.getElementsByTagName("SVC");
document.write("<select name = 'linesel' id='select1' onChange='line=this.value;location.reload();'>");
for (i=0;i<x.length;i++)
    {
    document.write("<option>");
    document.write(x[i].getElementsByTagName("LINE")[0].childNodes[0].nodeValue);
    document.write("</option>");
    }
document.write("</select></div></form>");

If it cannot be accomplished, then how can I avoid Chrome to default the select statement after reload?

Thanks for your help.

UPDATE

This is the rest of the script that uses the select value to load the XML:

line = document.lineForm.linesel.value;
    document.write("<img class='linelogo' src='images/lines/"+line.toLowerCase()+".png'>");
    xmlhttp=new XMLHttpRequest();
    xmlhttp.open("GET","Services.xml",false);
    xmlhttp.send();
    xmlDoc=xmlhttp.responseXML;
    document.write("<table align='left' border='0' cellpadding='0' cellspacing='0' width='340' height='300' class='svc-mat'><tr>");
    var x=xmlDoc.getElementsByTagName("SVC");
    var col=0;
    for (i=0;i<x.length;i++)
        {
        if (line != "ALL") {
            if (x[i].getElementsByTagName("LINES")[0].childNodes[0].nodeValue.search(line) != -1) 
                {
                document.write("<td><ul><li><a href='svc-det.html?name=");
                document.write(x[i].getElementsByTagName("CODE")[0].childNodes[0].nodeValue.replace(/\s+/g, '_'));
                document.write("'>");
                document.write(x[i].getElementsByTagName("CODE")[0].childNodes[0].nodeValue);
                    if (col==4 || col==9 || col==14 || col==19 || col==24 || col==29 || col==34 || col==39 || col==44 || col==49 || col==54 || col==59) {
                    document.write("</a></li></td></tr><tr>");}
                    else {
                    document.write("</a></li></td>");
                    }
                col++;
                }
            } else {
                    document.write("<td><ul><li><a href='svc-det.html?name=");
                    document.write(x[i].getElementsByTagName("CODE")[0].childNodes[0].nodeValue.replace(/\s+/g, '_'));
                    document.write("'>");
                    document.write(x[i].getElementsByTagName("CODE")[0].childNodes[0].nodeValue);
                        if (i==4 || i==9 || i==14 || i==19 || i==24 || i==29 || i==34 || i==39 || i==44 || i==49 || i==54 || i==59) {
                        document.write("</a></li></td></tr><tr>");}
                        else {
                        document.write("</a></li></td>");
            }
        }
    }
    document.write("</ul></tr></tbody></table>");