function verifmail(){
	var email=document.formname.email.value;
	var arobase=email.indexOf("@");
	var dot=email.lastIndexOf(".");
	var space=email.indexOf(" ");
	
	if ((arobase != -1)&&(dot != -1)&&(dot > arobase +1)&&(dot < email.length -1)&&(space == -1)){
	return true;
	}
	else{
		properties="height=90,width=260,left=250,top=250,location=no,scrollbars=no,menubars=no,toolbars=no,resizable=no,status=no";
		window.open("http://www.sailing-adventure.com/error.html", "", properties);
		return false;
		
	}
}
function verifmailus(){
	var email=document.formname.email.value;	
	var arobase=email.indexOf("@");
	var dot=email.lastIndexOf(".");
	var space=email.indexOf(" ");
	
	if ((arobase != -1)&&(dot != -1)&&(dot > arobase +1)&&(dot < email.length -1)&&(space == -1)){
	return true;
	}
	else{
		properties="height=90,width=260,left=250,top=250,location=no,scrollbars=no,menubars=no,toolbars=no,resizable=no,status=no";
		window.open("http://www.sailing-adventure.com/errorus.html", "", properties);
		return false;
		
	}
}