function changeHoverState(_elementObject)
{
    if (_elementObject.className.indexOf('hoverstate') >= 0)
    {        
        _elementObject.className = '';
    }
    else
    {
        
        _elementObject.className += 'hoverstate';
    }   
}

/*
function isValidEmail(str) {
   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
}
*/

function isValidEmail(_email)
{
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;	
	if (filter.test(_email)) { return true; } else { return false; }
}

function en_email_focus_changed(_element, _hasFocus) {
    if (_hasFocus && _element.value == 'Your Email Address Here') _element.value = '';
    if (!_hasFocus && _element.value == '') _element.value = 'Your Email Address Here';
}
$(function() {
	$("#frm_email_signup_header").submit(function() {
		if (!isValidEmail(document.getElementById('en_email').value)) {
			this.action = $("input[name='altUrl']").val();
		}
	});
});





function HideThisDiv(_elementID)
{
    if (document.getElementById(_elementID)) 
    {
        element = document.getElementById(_elementID)
        element.style.display = 'none';
        document.getElementById('skw').style.visibility = '';
        document.getElementById('btn_go').style.visibility = '';
    }
}

function ShowThisDiv(_elementID)
{
    if (document.getElementById(_elementID)) 
    {
        element = document.getElementById(_elementID)
        element.style.display = 'block';
        document.getElementById('skw').style.visibility = 'hidden';
        document.getElementById('btn_go').style.visibility = 'hidden';        
    }
}


function HighLight(_NavItemId)
{
    changeHoverState(document.getElementById('nid_' + _NavItemId));
}