I have a form with a css submit button. When a the submit button is clicked, i call a function that executes:

document.forms["request"].onsubmit();

What should happen, then, is that the onsubmit method ought to be triggered. This works properly in Chrome/FF, but for some reason IE/Safari will bypass the onsubmit function and simply add the parameter "address=" onto the url as if it were submitting the form and ignoring the onsubmit function. Heres the code for the form:

      <form id="request" method="get" onsubmit="addLocation(this.address.value); return false;">
        <br>
        <label style="position:relative;left:5px;" for="address">Enter an intersection or address:
        </label>
        <br>
        <br>
        <input style="height:35px; width:300px;position:relative;bottom:1px;left:10px;" id="address" name="address" class="required address"/>
        <a style="float:right;right:120px;position:relative;" class="button" onclick="submit();">
          <span>Submit Request
          </span>
        </a>
      </form>

and what follows are some relevant js functions:

function addLocation(address) {
if (geocoder) {
    geocoder.getLocations(address, function (point) {
        if (!point) {
            alert(address + " not found");
        } else {
            if (point.Placemark[0].address != submittedString) {
                submittedString = point.Placemark[0].address;
                addRow(point.Placemark[0].address);
                req = "addrequest?truck=" + "coolhaus&address=" + point.Placemark[0].address;
                alert(req);
                addRequest(req);
                request.onreadystatechange = function () {}
            }
        }
    });
}

}

function addRequest(req) {
try {
    request = new XMLHttpRequest();
} catch (e) {
    try {
        request = new ActiveXObject("Microsoft.XMLHTTP");
    } catch (e) {
        alert("XMLHttpRequest error: " + e);
    }
}
request.open("GET", req, true);
request.send(null);
return request;

}

You can test the form here:

http://la.truxmap.com/request?id=grillmastersla

Thanks so much!