/***********************************************
* Required field(s) validation v1.10- By NavSurf
* Visit Nav Surf at http://navsurf.com
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

function checkForm() {
sn = document.getElementById("surName").value;
fn =  document.getElementById("firstName").value;
bd =  document.getElementById("birthDate").value;
lo =  document.getElementById("location").value;
loo =  document.getElementById("location_other").value;
	
		//  Check SurName entered
		if (sn == "" || sn == null)
		{
		hideAllErrors();
		document.getElementById("surNameError").style.display = "inline";		
		document.getElementById("surName").select();
		document.getElementById("surName").focus();		
		return false;
		} 
		else		
		
		//  Check FirstName entered
		if (fn == "" || fn == null)
		{		
		hideAllErrors();			
		document.getElementById("firstNameError").style.display = "inline";	
		document.getElementById("firstName").select();
		document.getElementById("firstName").focus();		
		return false;
		}
		else	
		
		//  Check BirthDate entered
		if (bd == "" || bd == null)
		{		
		hideAllErrors();			
		document.getElementById("birthDateError").style.display = "inline";	
		document.getElementById("birthDate").select();
		document.getElementById("birthDate").focus();		
		return false;
		}
		else	
		
		//  Check Location
		if ((lo == "0") && (loo == "0") ) 
		{		
		hideAllErrors();			
		document.getElementById("locationError").style.display = "inline";	
		document.getElementById("location_otherError").style.display = "inline";	
		document.getElementById("location").select();
		document.getElementById("location").focus();		
		return false;
		}
		else
				
		return true;
		}
		
		function hideAllErrors() 
		{
		document.getElementById("surNameError").style.display = "none";
		document.getElementById("firstNameError").style.display = "none";
		document.getElementById("birthDateError").style.display = "none";
		document.getElementById("locationError").style.display = "none";
		document.getElementById("location_otherError").style.display = "none";
		}

		// numbers 
		function numbersonly(e)
		{
		var key;
		var keychar;
		if (window.event)
		 key = window.event.keyCode;
		else if (e)
		 key = e.which;
		else
		 return true;
		keychar = String.fromCharCode(key);
		keychar = keychar.toLowerCase();
		// control keys
		if ((key==null) || (key==0) || (key==8) || 
		 (key==9) || (key==13) || (key==27) )
		 return true;
		else
		return false;
		}