TabCard.prototype.activate = function()
{
	var theImg = document.getElementById(this.tabId);
	var theCard = document.getElementById(this.cardId);
	theImg.src = this.activeImg;
	theCard.style.display = "";
}
TabCard.prototype.deactivate = function()
{
	var theImg = document.getElementById(this.tabId);
	var theCard = document.getElementById(this.cardId);
	theImg.src = this.inactiveImg;
	theCard.style.display = "none";
}