function CreatePopupNoCheck(url, height, duration, description, lifetime) {
    // Exit if the current browser has already received the popup, or 
    // the browser is not supported (IE6).
    if (IsUnsupportedUserAgent())
        return;

    $.get(url, function(data) {
        var popup = $("<div>" + data + "</div>")
			.attr({ "id": "sliding_popup" })
			.css({ "bottom": -1 * height })
	    	.height(height)
			.hide()
			.appendTo("body");
        ShowPopup(description, lifetime, popup, duration);
    });
}

function CreatePopup(url, height, duration, description, lifetime) {
    // Exit if the current browser has already received the popup, or 
    // the browser is not supported (IE6).
    if (HasAlreadyReceivedPopup(description) || IsUnsupportedUserAgent())
    	return;

 $.get(url, function(data) {
     var popup = $("<div>" + data + "</div>")
			.attr({ "id": "sliding_popup" })
			.css({ "bottom": -1 * height })
	    	.height(height)
			.hide()
			.appendTo("body");
     ShowPopup(description, lifetime, popup, duration);
 });
}

function ShowPopup(description, lifetime, popup, duration) {
	popup.show().animate( { bottom: 0 }, duration);
	ReceivedPopup(description, lifetime);
}

function HasAlreadyReceivedPopup(description) {
    retVal = document.cookie.indexOf(description) > -1; 
    return retVal;
}

function ReceivedPopup(description, lifetime) {
	var date = new Date(); 
	date.setDate(date.getDate() + lifetime); 
	document.cookie = description + "=true;expires=" + date.toUTCString() + ";path=/"; 
}

function IsUnsupportedUserAgent() {    
    retVal = !window.XMLHttpRequest;
    return (retVal); 
}

function DestroyPopup(duration) {
	$("#sliding_popup").animate({ bottom: $("#sliding_popup").height() * -1 }, duration, function () { $("#sliding_popup").remove(); })
}