function PageQuery(q) {
    if(q.length > 1) this.q = q.substring(1, q.length);
    else this.q = null;
    this.keyValuePairs = new Array();
    if(q) {
    for(var i=0; i < this.q.split("&").length; i++) {
    this.keyValuePairs[i] = this.q.split("&")[i];
    }
    }
    this.getKeyValuePairs = function() { return this.keyValuePairs; }
    this.getValue = function(s) {
    for(var j=0; j < this.keyValuePairs.length; j++) {
    if(this.keyValuePairs[j].split("=")[0] == s)
    return this.keyValuePairs[j].split("=")[1];
    }
    return false;
    }
    this.getParameters = function() {
    var a = new Array(this.getLength());
    for(var j=0; j < this.keyValuePairs.length; j++) {
    a[j] = this.keyValuePairs[j].split("=")[0];
    }
    return a;
    }
    this.getLength = function() { return this.keyValuePairs.length; }
}

function getQueryStringValue(key){
    var page = new PageQuery(window.location.search);
    return unescape(page.getValue(key));
}
function displayItem(key){
    if (getQueryStringValue(key)=='false') {
        document.write("you didn't enter a ?name=value querystring item.");
    } else {
        document.write(getQueryStringValue(key));
    }
}