function echeck(str) {
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)

		if (str.indexOf(at)==-1){
		   alert("Please enter a valid Email Address")
		   return false
		}
		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter a valid Email Address")
		   return false
		}
		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Please enter a valid Email Address")
		    return false
		}
		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Please enter a valid Email Address")
		    return false
		 }
		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Please enter a valid Email Address")
		    return false
		 }
		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Please enter a valid Email Address")
		    return false
		 }		
		 if (str.indexOf(" ")!=-1){
		    alert("Please enter a valid Email Address")
		    return false
		 }
 		 return true					
	}

function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false}
else {return true}
}
}	

function validate_form(thisform)
{
with (thisform)
{
if (validate_required(email,"Email must be filled out!")==false)
  {email.focus();return false}
  
if (echeck(email.value)==false)
  {email.focus();return false}
  
if (validate_required(first_name,"Please enter your first name")==false)
  {first_name.focus();return false}
  
if (validate_required(surname,"Please enter your surname")==false)
  {surname.focus();return false}
  
if (validate_required(company,"Please enter your company name")==false)
  {company.focus();return false}
  
if (validate_required(postcode,"Please enter your postcode")==false)
  {postcode.focus();return false}
  
if (validate_required(scientists,"Please enter the number of scientists on your site")==false)
  {scientists.focus();return false}
  
if (validate_required(password,"password must be filled out!")==false)
  {password.focus();return false}   
  
}
}

function validate_login(thisform)
{
with (thisform)
{
if (validate_login_required(username,"Please enter a username")==false)
  {username.focus();return false}

if (validate_login_required(password,"Please enter a password")==false)
{password.focus();return false}
  
if(remember.checked==1){
set_name(thisform);
}	

}
}

function validate_login_required(field,alerttxt)
{
with (field)
{
if (value==null||value=="")
  {alert(alerttxt);return false}
else {
return true}
}
}


function SetCookie (name, value) {
  var argv = SetCookie.arguments;
  var argc = SetCookie.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = "/";
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  document.cookie = name + "=" + escape (value) +
   ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
   ((path == null) ? "" : ("; path=/")) +
   ((domain == null) ? "" : ("; domain=" + domain)) +
   ((secure == true) ? "; secure" : "");
}

function set_name(form) {
  var expdate = new Date ();
  expdate.setTime (expdate.getTime() + (24 * 60 * 60 * 1000 * 31));
  var username = form.username.value

      SetCookie ("jtotwname", username, expdate);

      }
      
function set_country(form) {
//	alert("changed");
//  var expdate = new Date ();
//  expdate.setTime (expdate.getTime() + (24 * 60 * 60 * 1000 * 31));
  var country = form.GrpComp.value;
//  lastChar = country.substring(country.length-2);
//alert(country);
location.href=country;
//SetCookie ("jtotwcountry", lastChar, expdate);
      }
	  
function setVisibility(id, visibility) {
document.getElementById(id).style.display = visibility;
}