// store.levitt.com/institute 
// Additional javascript for the instutes page
// Functions by Greg Hartwig (greg at hartwig dot com) 2006-08



// Check and uncheck course boxes
function doSelect(firstItem, lastItem) {
	// Set checkboxes within the range and clear the rest
	for (var i=1; i<=12; i++)
		document.getElementById("c"+i).checked = (i>=firstItem && i<=lastItem);
	
	return false;  // Cancel the anchor link
}


// Validate the order page before continuing
function checkSubmit() {
	var proceed;
	
	// See if any courses are selected
	var coursesSelected = false;
	for (var i=1; i<=12; i++)
		if (document.getElementById("c"+i).checked)
			coursesSelected = true;
	
	// Check for registration selected
	var registrationSelected = document.getElementById("regfee").checked;
	
	//alert("course="+coursesSelected+", reg="+registrationSelected);
	
	if (coursesSelected && !registrationSelected) {
		proceed = confirm("Are you sure you want to order courses WITHOUT REGISTERING ?");
	}
	
	else if (!coursesSelected && registrationSelected) {
		proceed = confirm("Are you sure you want to register without ordering ANY courses ?");
	}
	
	else if (coursesSelected && registrationSelected) {
		proceed = true;
	}
	
	else {
		alert("You have not ordered anything.");
		proceed = false;
	}
	
	
	return proceed;
}




// Attach the verification function to the submit button
//addEvent(document.getElementById("orderform"), "submit", checkSubmit);