<!--
function book_check(ck)
{
	if( document.myForm2.ename.value.length == 0 ) {
		alert("Please complete the \"Name\" field.");
		document.myForm2.ename.focus();
		return false;
	}

	if (document.myForm2.ename.value.length > 15)
	{
		alert("Please enter at most 15 characters in the \"Name\" field.");
		document.myForm2.ename.focus();
		return false;
	}

	if (document.myForm2.email.value.length > 50)
	{
		alert("Please enter at most 50 characters in the \"E-Mail\" field.");
		document.myForm2.email.focus();
		return false;
	}

	if( document.myForm2.email.value.length > 0 ) {
		i = document.myForm2.email.value.indexOf( "@" );
		j = document.myForm2.email.value.indexOf( ".", i );
		k = document.myForm2.email.value.indexOf( "," );
		kk = document.myForm2.email.value.indexOf( " " );
		jj = document.myForm2.email.value.lastIndexOf( "." ) + 1;
		len = document.myForm2.email.value.length;
		if( ( i <= 0 ) || ( j <= 2 ) || ( k != -1 ) || ( kk != -1 ) || ( len - jj < 2 ) || ( len - jj > 3 ) ) {
			alert( "The E-Mail Address field must be filled." );
			document.myForm2.email.focus();
			return false;
		}
	}

	if( document.myForm2.messages.value.length == 0 ) {
		alert("Please complete the \"Messages\" field.");
		document.myForm2.messages.focus();
		return false;
	}

	if (document.myForm2.messages.value.length > 2000)
	{
		alert("Please enter at most 2000 characters in the \"Messages\" field.");
		document.myForm2.messages.focus();
		return false;
	}
}
//-->