function doListExpander(listItem)
{
	
		var listArray = new Array('promotion','get-generic','use-insurance','apply-medicaid','buy-more','use-coupon','freeshipping');

		var numberOfListItems = listArray.length;
		for (i = 0;i < numberOfListItems; i++)
		{
			if (document.getElementById(listArray[i])) {
				document.getElementById(listArray[i]).className = "closed"; // close all list items
				document.getElementById(listArray[i] + "-content").style.display = "none"; // hide all the content       
			}    
		}
		if (listItem == '' || !document.getElementById(listItem)) 
		{
			for (i=0; i<numberOfListItems; i++) {
				if (document.getElementById(listArray[i])) {
					document.getElementById(listArray[i]).className = "open";
					document.getElementById(listArray[i] + "-content").style.display = "block";
					break;
				}
			}
		} else {	
			document.getElementById(listItem).className = "open"; // turn the selected list item on
			document.getElementById(listItem + "-content").style.display = "block";; // turn the selected list item on
		}
 
}