function backButtonTest()
        {
            try
            {
            
                var mod = document.forms[0].ctl00$ctl00$PageBody$PageBody$hidSubModified.value;
                
                if (mod == "true")
                {
                    alert("To revise your seating requests, please click \"OK\" and then click \"Undo\" or \"Remove\" next to the series you would like to modify on this page and start over.");
                    browsername=navigator.appName;
                    if (browsername.indexOf("Microsoft") !=-1)
                    {
                        window.location.href("/SiteCode/Purchase/SubscriptionRenewals.aspx");
                    }
                    else
                    {
                        location.replace("/SiteCode/Purchase/SubscriptionRenewals.aspx");
                    }
        	        return false;
                }
            }
            catch(err){}
        }
        
            
        function subsModify()
	    {
            try
	        {
                document.forms[0].ctl00$ctl00$PageBody$PageBody$hidSubModified.value = "false";
            }
	        catch(error){}
	    }
	    
	    function subsModifyCheckout()
	    {
	        try
	        {
	        	var intRenewalsCount = parseInt(document.forms[0].ctl00$ctl00$PageBody$PageBody$hidRenewalsCount.value);
	        	
                if (intRenewalsCount <= 0 &&
                    document.forms[0].ctl00$ctl00$PageBody$PageBody$hidDefaultRenewalPriceType.value == "true")  
	                {
    	            alert("To continue your subscription renewal order, you must have at least one subscription series in your order. If you do not wish to renew your subscription series for next season and would like to cancel your order, please call CarnegieCharge at 212-247-7800. Please review your order and try again.");
	                return false;
	            }
	            else
	            {
	                document.forms[0].ctl00$ctl00$PageBody$PageBody$hidSubModified.value = "false";
	                document.forms[0].ctl00$ctl00$PageBody$PageBody$btnFinish.disabled = false;
	                return true;
	            }
	        }catch(error1){}
	    }