function getGetParam(varName)
{
    var varLimit=2;
    var i;
    var urlAry;
    var varAry;
    var workAry;
    urlAry=location.href.split('?',2);

    if(urlAry[1]) varAry=urlAry[1].split('&',varLimit);

    if(varAry)
    {
        for(i=0;i<varAry.length;i++) {
            workAry=varAry[i].split('=',2)
            if(workAry[0]==varName) return workAry[1];
        }
    }
    return null;
}
function getParams () {
    var params = "?";
    if (id = getGetParam('id')) params = params + 'id=' + id+'&';
    if (params == "?") {
        return "";
    } else {
        return params;
    }
}