function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@"); 
   if (index > 0) 
    {
	    var pindex = theStr.indexOf(".",index);
		if ((pindex > index+1) && (theStr.length > pindex+1))
			result = true; 
	 } 
	  return result;
}
 function check()
 {
  if(document.register.lname.value=="")
   {
   alert ("Please enter your name");
   document.register.lname.focus();
   return 0;
   }
    if(document.register.email.value=="")
   {
   alert ("Please enter your email adress");
   document.register.email.focus();
   return 0;
   }
   if(!isEmailAddr(document.register.email.value))
   {
    alert("Please enter your email address correctly");
	document.register.email.focus();
	return 0;
	}
   document.register.submit();
 }

 function check2()
 {
  if(document.register.name.value=="")
   {
   alert ("Please enter your name");
   document.register.name.focus();
   return 0;
   }
     if(document.register.phone.value=="")
   {
   alert ("Please enter your phone");
   document.register.phone.focus();
   return 0;
   }
    if(document.register.email.value=="")
   {
   alert ("Please enter your email adress");
   document.register.email.focus();
   return 0;
   }
   if(!isEmailAddr(document.register.email.value))
   {
    alert("Please enter your email address correctly");
	document.register.email.focus();
	return 0;
	}
   document.register.submit();
 }

 function check3()
 {
  if(document.register.name.value=="")
   {
   alert ("Please enter your name");
   document.register.name.focus();
   return 0;
   }
  
    if(document.register.email.value=="")
   {
   alert ("Please enter your email adress");
   document.register.email.focus();
   return 0;
   }
   if(!isEmailAddr(document.register.email.value))
   {
    alert("Please enter your email address correctly");
	document.register.email.focus();
	return 0;
	}

   if(document.register.subject.value=="")
   {
   alert ("Please enter subject");
   document.register.subject.focus();
   return 0;
   }

   if(document.register.text.value=="")
   {
   alert ("Please enter text");
   document.register.text.focus();
   return 0;
   }

   document.register.submit();
 }

NS4 = (document.layers) ? true : false;

function checkEnter(event)
{ 	
	var code = 0;
	
	if (NS4)
		code = event.which;
	else
		code = event.keyCode;
	if (code==13)
		check();
}

function checkEnter2(event)
{ 	
	var code = 0;
	
	if (NS4)
		code = event.which;
	else
		code = event.keyCode;
	if (code==13)
		check2();
}

function checkEnter3(event)
{ 	
	var code = 0;
	
	if (NS4)
		code = event.which;
	else
		code = event.keyCode;
	if (code==13)
		check3();
}