function checkPromo()
  {
  		var promoIn = document.getElementById("promocode");
		var datesValue = document.getElementById("dates").value;
		var selectedValue = document.getElementById("packages").value;

        if (datesValue == "")
      	{
      		alert("Please select a date.");
			return;
      	}
     	else if (selectedValue == "")
      	{
      		alert("Please select a package.");
			return;
      	}
      	else if (datesValue == "full")
      	{
      		alert("Sorry, this date is full.\rPlease call 313-454-3113 to check for cancellations.");
			return;
      	}
       	else if (selectedValue == "Couple")
      	{
      		document.getElementById("item_name").value = "Tour Reservation (Couple's Package)";
      		document.getElementById("amount").value = "648.00";
      		if (promoIn == null)
			{
				//Nothing to do, promo option is disabled
			}
			else if( promoIn.value.toLowerCase() == "belize circle")	document.getElementById("amount").value = "198.00";
     			else if( promoIn.value.toLowerCase() == "il" )		document.getElementById("amount").value = "549.00";
/***
     			else if( promoIn.value.toLowerCase() == "reta" )		document.getElementById("amount").value = "598.00";
     			else if( promoIn.value.toLowerCase() == "obb598" )	document.getElementById("amount").value = "598.00";
     			else if( promoIn.value.toLowerCase() == "lios" )	document.getElementById("amount").value = "498.00";
			else if( promoIn.value.toLowerCase() == "saturday")
			{
				document.getElementById("amount").value = "299.00";
				alert("Thank you for registering for Saturday and Saturday evening with Orchid Bay.");
			}
			else if( promoIn.value.toLowerCase() == "april" && datesValue == "April 23, 24 & 25, 2010")
			{
				alert("Congratulations!\r\rYou are eligible for the\rApril 2010 $150.00 couples discount.\r\rYour couples tour will be only $498.00.")
				document.getElementById("amount").value = "498.00";
			}
****/
      	} 
		else if (selectedValue == "Individual")
      	{
      		document.getElementById("item_name").value = "Tour Reservation (Individual Package)";
      		document.getElementById("amount").value = "399.00";
			if (promoIn == null)
			{
				//Nothing to do, promo option is disabled
			}
			else if( promoIn.value.toLowerCase() == "belize circle")	document.getElementById("amount").value = "99.00";
     			else if( promoIn.value.toLowerCase() == "il" )		document.getElementById("amount").value = "299.00";
/****
     			else if( promoIn.value.toLowerCase() == "reta" )		document.getElementById("amount").value = "299.00";
     			else if( promoIn.value.toLowerCase() == "obb199" )	document.getElementById("amount").value = "349.00";
     			else if( promoIn.value.toLowerCase() == "obb349" )	document.getElementById("amount").value = "349.00";
     			else if( promoIn.value.toLowerCase() == "il" )		document.getElementById("amount").value = "299.00";
     			else if( promoIn.value.toLowerCase() == "lios" )	document.getElementById("amount").value = "299.00";
			else if( promoIn.value.toLowerCase() == "saturday")
			{
				document.getElementById("amount").value = "299.00";
				alert("Thank you for registering for Saturday and Saturday evening with Orchid Bay.");
			}
			else if( promoIn.value.toLowerCase() == "april" && datesValue == "April 23, 24 & 25, 2010")
			{
				alert("Congratulations!\r\rYou are eligible for the\rApril 2010 $100.00 individual discount.\r\rYour individual tour will be only $299.00")
				document.getElementById("amount").value = "299.00";
			}
****/
      	}
		else if (selectedValue == "Individual IL Tulum")
      	{
      		document.getElementById("item_name").value = "Individual IL Tulum";
      		document.getElementById("amount").value = "199.00";
      	}
		else if (selectedValue == "Couple IL Tulum")
      	{
      		document.getElementById("item_name").value = "Couple IL Tulum";
      		document.getElementById("amount").value = "299.00";
      	}
      	document.forms[0].submit();
  }




  function setPriceList ()
  {
	var dates = document.getElementById("dates").value;
	var packages = document.getElementById("packages");

    	if (dates == "")
    	{
        	return;
    	}
    	else if (dates == "November 14 & 15, 2010")
    	{
        	removeOptions(packages);
        	addOptionILTulum(packages);
    	}
    	else
    	{
        	removeOptions(packages);
        	addOptions(packages);
    	}
  }

  function removeOptions(selectbox)
  {
 	var i;
  	for(i=selectbox.options.length-1;i>=0;i--)
  	{
  		selectbox.remove(i);
  	}
  }

  function addOption(selectbox,text,value )
  {
  	var optn = document.createElement("OPTION");
  	optn.text = text;
  	optn.value = value;
  	selectbox.options.add(optn);
  }

  function addOptions(selectbox){
  	addOption(selectbox, "Select a Package","");
  	addOption(selectbox, "Individual Package ($399)","Individual");
  	addOption(selectbox, "Couple's Package ($648)","Couple");
  }

  function addOptionILTulum(selectbox){
  	addOption(selectbox, "Select a Package","");
 	addOption(selectbox, "Individual IL Tulum ($199)","Individual IL Tulum");
  	addOption(selectbox, "Couple's IL Tulum ($299)","Couple IL Tulum");
  }

  function addOneDayOptions(selectbox){
  	addOption(selectbox, "Select a Package","");
  	addOption(selectbox, "Individual Package ($399)","Individual");
  	addOption(selectbox, "Couple's Package ($648)","Couple");
	addOption(selectbox, "Individual One Day Tour Package ($299)","Individual One Day");
	addOption(selectbox, "Couple's One Day Tour Package ($499)","Couple One Day");
  }