function get_url_parameter( name ){
    name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
    var regexS = "[\\?&]"+name+"=([^&#]*)";
    var regex = new RegExp( regexS );
    var results = regex.exec( window.location.href );
    if( results == null )
        return "";
    else
        return results[1];
}


function remove_url_parameter(url, param){
	var URL = String(url);
	var regex = new RegExp( "\\?" + param + "=[^&]*&?", "gi");
	URL = URL.replace(regex,'?');
	regex = new RegExp( "\\&" + param + "=[^&]*&?", "gi");
	URL = URL.replace(regex,'&');
	URL = URL.replace(/(\?|&)$/,'');
	regex = null;
	return URL;
}