function getShoppingCartSummary() {
	var mainElement;
	var summaryElement;
	
	mainElement = document.getElementById('display_cart_summary');
	
	if(mainElement == null) {
		return null;
	}

	return mainElement.innerHTML;	
	
	//return '(Your shopping cart contains 2 items for a total cost of $920.00)';
}


function isShoppingCartEmpty() {
	var contents;
	
	contents = getShoppingCartSummary();
	
	if(contents == null) {
		return false;
	}

	if(contents.search('(Your shopping cart is empty)') != -1) {
		return true;
	}
	
	return false;
}


function getShoppingCartItems() {
	var summary;
	var result;

	summary = getShoppingCartSummary();
	
	if(summary == null) {
		return null;
	}
	
	result = summary.match(/\d+/);
	
	if(result == null) {
		return null;
	}
	
	return result[0];
}


function getShoppingCartTotal() {
	var summary;
	var result1;
	var result2;
	var output;

	summary = getShoppingCartSummary();
	
	if(summary == null) {
		return null;
	}
	
	//(Your shopping cart contains 1 item priced at $800.00) 
	//(Your shopping cart contains 2 items for a total cost of $920.00) 
	result1 = summary.match(/total\scost\sof\s.*\)/);
	result2 = summary.match(/priced\sat\s.*\)/);
	
	if(result1 == null && result2 == null) {
		return null;
	}
	
	if(result1 != null) {
		//total cost of text
		if(result1[0] == null || result1[0].length <= 15) {
			return null;
		}
		
		output = result1[0].substr(14, result1[0].length-15);
	}
	else {
		//priced at text
		if(result2[0] == null || result2[0].length <= 11) {
			return null;
		}
		
		output = result2[0].substr(10, result2[0].length-11);
	}
	
	return output;
}

function setCartInfo()
{
	if (isShoppingCartEmpty() ) {
		document.getElementById("cart_summary_ex").innerHTML = '(0) Items in Cart <span style="padding-left:20px; font-weight:bold;">$0.00</span>';
	} else {	
		items = getShoppingCartItems();
		total = getShoppingCartTotal();
		if (items == null)
			items = 0;
		if (total == null)
			total = '$0.00';	
		document.getElementById("cart_summary_ex").innerHTML = '(' + items + ')' +' Items in Cart ' + '<span style="padding-left:20px; font-weight:bold;">' + total + '</span>';
	}	
}