function showLinkToGameHelp() {
	var element = document.getElementById('linkToGameHelp');
	
	hidePopups();
	
	element.style.visibility = 'visible';
}

function showLicenseSWFHelp() {
	var element = document.getElementById('licenseSWFHelp');
	
	hidePopups();
	
	element.style.visibility = 'visible';
}

function showLicenseSourceHelp() {
	var element = document.getElementById('licenseSourceHelp');
	
	hidePopups();
	
	element.style.visibility = 'visible';
}

function showShoppingCartTips(type) {
	var nameValues = document.cookie.split(';');
	var element;
	var nameValue, name, value;
	var i;
	
	for(i=0;i<nameValues.length;i++) {
		nameValue = nameValues[i].split('=');
		name = trim(nameValue[0]);
		value = trim(nameValue[1]);
		
		if(name == 'dontShowShoppingCartTips') {
			if(value == 'true') return;
		}
	}
	
	element = document.getElementById('shoppingCartTips');
	
	hidePopups();
	
	element.className = 'gameShoppingCartTips gameShoppingCartTips' + (type == 'swf' ? 'SWF' : 'Source');
	element.style.visibility = 'visible';
}

function trim(theString) {
	var begin, end;
	
	for(begin=0;begin<theString.length;begin++) {
		if(theString.substr(begin, 1) != ' ') break;
	}
	
	for(end=theString.length;end>begin;end--) {
		if(theString.substr(end - 1, 1) != ' ') break;
	}
	
	return theString.substring(begin, end);
}

function toggleShowShoppingCartTips(checkBox) {
	if(checkBox.checked) {
		document.cookie = 'dontShowShoppingCartTips=true; path=/';
	} else {
		document.cookie = 'dontShowShoppingCartTips=false; path=/';
	}
}

function hidePopups() {
	var element;
	
	element = document.getElementById('linkToGameHelp');
	element.style.visibility = 'hidden';
	
	element = document.getElementById('licenseSWFHelp');
	element.style.visibility = 'hidden';
	
	element = document.getElementById('licenseSourceHelp');
	element.style.visibility = 'hidden';
	
	element = document.getElementById('shoppingCartTips');
	element.style.visibility = 'hidden';
}

function initializeCartButtons() {
	updateCartButton('swf', id, 'swfCartButton');
	updateCartButton('source', id, 'sourceCartButton');
}