function formCheck() {	
	if (document.newsletter.email.value=="")
		{		
		document.newsletter.email.focus();
		alert("Please enter your e-mail address");
		return false;		
		} 
	if (document.newsletter.email.value!="")
		{ 			
			if ( document.newsletter.email.value.indexOf("@")==-1 ||
			document.newsletter.email.value.indexOf(".")==-1 || 
			document.newsletter.email.value.indexOf(" ")!=-1  || 
			 document.newsletter.email.value.length<6 ) 
		
		{
		document.newsletter.email.focus(); alert("Sorry, your e-mail address is not valid."); return false;
		} 
	} }