Set NetCommunity donation form fields according to values in URL - see http://manypies.paulmorriss.com/2013/06/netcommunity-donation-form-based-on-url.html

gistfile1.html

<!-- Javascript for parseQueryString -->
<script type="text/javascript" src="/NetCommunity/Document.Doc?id=10"></script>
<script type="text/javascript">
function replaceAmountRecipient()
{
    var xyzPrefix = '';
            xyzPrefix = Page_Validators[0].controltovalidate.substring(0,7);
            //If it is a three digit prefix then we chop it down
            if (xyzPrefix.slice(-1) != "_") {
                xyzPrefix=xyzPrefix.substring(0,6);
            }
    
    
    var queryData = parseQueryString(location.search);
    
    // Replace amount with that encoded in the URL: amount=99 say
    // so long as there is not anything in there anyway
    if ($('#'+xyzPrefix + 'txtAmount').val()==='') {
        if (queryData.amount) {
            $('#'+xyzPrefix + 'txtAmount').val(queryData.amount[0]);
        }
    }
    
    // If free text field is hidden, (style=display:none) i.e. page has just been loaded from scratch then...
    if ($('#'+xyzPrefix + 'trDesignationOther').length>0) {
        if ($('#'+xyzPrefix + 'trDesignationOther').attr('style') !== '')
        {
            if (queryData.recipient) {
                if (isNaN(queryData.recipient[0])) {
                // Recipient contains text:
                    //Choose other from dropdown
                    $('#'+xyzPrefix + 'ddlDesignations').val('{0381473C-0F0D-4c0f-AD74-4BFAF6A4AD8D}');
        //This used to be necessary to case the selected value to appear, but it does not seem to be
        //and it makes the page jump so has been removed.
        //            document.getElementById(xyzPrefix + 'ddlDesignations').scrollIntoView();
                    // Set free text field and unhide it
                    $('#'+xyzPrefix + 'txtDesignation').val(queryData.recipient[0]);
                    $('#'+xyzPrefix + 'trDesignationOther').removeAttr('style');
                }
                else
                {
                if (queryData.recipient[0] !=='') {
                     if (queryData.recipient[0] !=='-1') {
                    // If the recipient is numeric then choose the value from the dropdown. The numbers used for the
                    // dropdown are probably page specific.
                    $('#'+xyzPrefix + 'ddlDesignations').val(queryData.recipient[0]);
                   }
                   } else
                   { 
                    // If nothing is specified then the dropdown does not change
          
                    }
                }
            }
            else { //No recipient, default to other on dropdown and prompting text in other field
                    //Choose other from dropdown
                    $('#'+xyzPrefix + 'ddlDesignations').val('{0381473C-0F0D-4c0f-AD74-4BFAF6A4AD8D}');
        
                    // Set free text field and unhide it by removing hidden style
                    $('#'+xyzPrefix + 'txtDesignation').attr('placeholder','Enter member or project name here');
                    $('#'+xyzPrefix + 'trDesignationOther').removeAttr('style');
            }
        }
    }
}
function runit3(){
window.onload = replaceAmountRecipient;
}
runit3();
</script>