var currNav = ''; // Set current nav id

// Set top and sometimes left nav
function setNav(topNav, sideNav)
{
	currNav = topNav;
	if (document.getElementById(topNav)) {
		document.getElementById(topNav).className = 'selected';
	}
	
	if (sideNav != undefined)
	{
		if (document.getElementById(sideNav)) {
			document.getElementById(sideNav).className = 'selected';
		}
	}
}

function toggle(target)
{
	realTarget = document.getElementById(target);
	
	if (realTarget.style.display == 'none')
	{
		realTarget.style.display = 'block';
	} else {
		realTarget.style.display = 'none';
	}
}

function signupEmail(addy)
{
	var s = '<form action="/simple/process.php" method="post">';

	// add inputs corresponding to your javascript object
	s += '<input type="hidden" name="address" value="' + escape(addy) + '" />';
	s += '</form>';

	var $form = $(s).appendTo('body');

	// submit it
	$form.submit(); 
}

/*** Form checking functions ***/
function checkField (val, field)
{
    var error = "";
    if (val == "")
    {
      error = "You must enter a value in the " + field + " field.\n";
    }
    return error;
}
function checkEmail(val, field)
{
    var error = "";
    if ((val == "" || val.length < 3) ||
        (val.indexOf("@") == "-1") ||
        (val.indexOf(".") == "-1"))
    {
        error = "Please enter a valid " + field + " address.\n";
    }

    return error;
}