function checkEmail(pageSwitch)
{
	if (document.getElementById('departmentSpan') != null)
		document.getElementById('departmentSpan').style.display = 'none';
	if (document.getElementById('nameSpan') != null)
		document.getElementById('nameSpan').style.display 		= 'none';
	if (document.getElementById('emailSpan') != null)
		document.getElementById('emailSpan').style.display 		= 'none';
	if (document.getElementById('numberSpan') != null)
		document.getElementById('numberSpan').style.display 	= 'none';
	if (document.getElementById('preferenceSpan') != null)
		document.getElementById('preferenceSpan').style.display = 'none';
	if (document.getElementById('messageSpan') != null)
		document.getElementById('messageSpan').style.display 	= 'none';
		
	var error = false;
	if (document.getElementById('department') != null)
		var department 	= document.getElementById('department').options[document.getElementById('department').selectedIndex].value;
	if (document.getElementById('name') != null)
		var name 		= document.getElementById('name').value;
	if (document.getElementById('doctor') != null)
		var doctor 		= document.getElementById('doctor').value;
	if (document.getElementById('email') != null)
		var email 		= document.getElementById('email').value;
	if (document.getElementById('number') != null)
		var number 		= document.getElementById('number').value;
	if (document.getElementById('pref') != null)
		var pref 		= document.getElementById('pref').options[document.getElementById('pref').selectedIndex].value;	
	if (document.getElementById('message') != null)
		var message 	= document.getElementById('message').value;
	if (document.getElementById('university') != null)
		var university	= document.getElementById('university').value;
	if (document.getElementById('director') != null)
		var director 	= document.getElementById('director').value;
	if (document.getElementById('doctor') != null)
		var doctor 		= document.getElementById('doctor').value;
	
	if ( (!doctor) && (document.getElementById('doctor') != null) )
	{
		error = true;
		if (document.getElementById('doctorSpan') != null)
			document.getElementById('doctorSpan').style.display = 'block';
	}
	if ( (!name) && (document.getElementById('name') != null) )
	{
		error = true;
		if (document.getElementById('nameSpan') != null)
			document.getElementById('nameSpan').style.display = 'block';
	}
	
	if (department <= 0)
	{
		error = true;
		if (document.getElementById('departmentSpan') != null)
			document.getElementById('departmentSpan').style.display = 'block';
	}
	if (!email)
	{
		error = true;
		if (document.getElementById('emailSpan') != null)
			document.getElementById('emailSpan').style.display = 'block';
	}
	if (!number)
	{
		error = true;
		if (document.getElementById('numberSpan') != null)
			document.getElementById('numberSpan').style.display = 'block';
	}
	if (pref <= 0)
	{
		error = true;
		if (document.getElementById('preferenceSpan') != null)
			document.getElementById('preferenceSpan').style.display = 'block';
	}
	if (!message)
	{
		error = true;
		if (document.getElementById('messageSpan') != null)
			document.getElementById('messageSpan').style.display = 'block';
	}
	
	if (!error)
	{
		var params = '&m=email';
		params += '&p='+ pageSwitch;		
		params += '&department='+ document.getElementById('department').options[document.getElementById('department').selectedIndex].value;
		params += '&pref='+ document.getElementById('pref').options[document.getElementById('pref').selectedIndex].value;
		params += '&email='+ escape(document.getElementById('email').value);
		params += '&number='+ escape(document.getElementById('number').value);
		params += '&message='+ escape(document.getElementById('message').value);

		if (document.getElementById('name') != null)		
			params += '&name='+ escape(document.getElementById('name').value);
		if (document.getElementById('doctor') != null)		
			params += '&doctor='+ escape(document.getElementById('doctor').value);
		if (document.getElementById('university') != null)
			params += '&university='+ escape(document.getElementById('university').value);
		if (document.getElementById('director') != null)
			params += '&director='+ escape(document.getElementById('director').value);
	
		try { request = new ActiveXObject("Msxml2.XMLHTTP"); }
		catch(e) {
		try { request = new ActiveXObject("Microsoft.XMLHTTP"); }
		catch(oe) { request = null; }
		}
			
		if (request == null && typeof XMLHttpRequest != "undefined") 
			request = new XMLHttpRequest();
		if (request != null) 
		{		
			request.open("POST", 'index.php', true);
			request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
			request.setRequestHeader("Content-length", params.length);
			request.setRequestHeader("Connection", "close");
			request.onreadystatechange = function() 
			{
				if (request.readyState == 4) 
				{
					if (request.status == 200) 
					{
						alert('Your Email Has Been Sent. Thank You.');
						window.location.href=window.location.href;
					}
				}
			};
			request.send(params);
		}
	}
}
//------------------------------------------------------------------------------------------------------------------