////////String.format
function _StringFormatInline() {
    var txt = this;
    for (var i = 0; i < arguments.length; i++) {
        var exp = new RegExp('\\{' + (i) + '\\}', 'gm');
        txt = txt.replace(exp, arguments[i]);
    }
    return txt;
}
function _StringFormatStatic() {
    for (var i = 1; i < arguments.length; i++) {
        var exp = new RegExp('\\{' + (i - 1) + '\\}', 'gm');
        arguments[0] = arguments[0].replace(exp, arguments[i]);
    }
    return arguments[0];
}
if (!String.prototype.format) {
    String.prototype.format = _StringFormatInline;
}
if (!String.format) {
    String.format = _StringFormatStatic;
}


String.prototype.trim = function(){return 
(this.replace(/^[\s\xA0]+/, "").replace(/[\s\xA0]+$/, ""))}

String.prototype.trimEnd = function(c) {
    if (c)        
        return this.replace(new RegExp(c.escapeRegExp() + "*$"), '');
    return this.replace(/\s+$/, '');
}
String.prototype.trimStart = function(c) {
    if (c)
        return this.replace(new RegExp("^" + c.escapeRegExp() + "*"), '');
    return this.replace(/^\s+/, '');
}





String.prototype.startsWith = function(str) 
{return (this.match("^"+str)==str)}

String.prototype.endsWith = function(str) 
{return (this.match(str+"$")==str)}






String.prototype.getQueryStringValue = 
function(key, query) {
    if (!query)
        query = window.location.search;    
    var re = new RegExp("[?|&]" + key + "=(.*?)&");
    var matches = re.exec(query + "&");
    if (!matches || matches.length < 2)
        return "";
    return decodeURIComponent(matches[1].replace("+", " "));
}
String.prototype.setQueryStringValue = 
function(key, value, query) {
   
    query = query || window.location.search;
    var q = query + "&";
    var re = new RegExp("[?|&]" + key + "=.*?&");
    if (!re.test(q))
        q += key + "=" + encodeURI(value);
    else
        q = q.replace(re, "&" + key + "=" + encodeURIComponent(value) + "&");
    q = q.trimStart("&").trimEnd("&");
    return q[0]=="?" ? q : q = "?" + q;
}


String.prototype.setQS =
function(selector,key,value)
{
    var s = $(selector);
    setQueryStringValue(key, value, s);
};