//############################ trim
function trim(str){
	var s=str;
	while( s.length>0 && s.charAt(s.length-1)==" "){
		s=s.substring(0,s.length-1);
	};
	while( s.length>0 && s.charAt(0)==" "){
		s=s.substring(1,s.length);
	};
	return s;
}

//############################ linetrim
function linetrim(str){
	var s=str;
	while( s.length>0 && (s.charAt(s.length-1)==" " || s.charAt(s.length-1)=="\n" || s.charAt(s.length-1)=="\r"|| s.charAt(s.length-1)=="\t") ){
		s=s.substring(0,s.length-1);
	};
	while( s.length>0 && (s.charAt(s.length-1)==" " || s.charAt(s.length-1)=="\n" || s.charAt(s.length-1)=="\r"|| s.charAt(s.length-1)=="\t") ){
		s=s.substring(1,s.length);
	};
	return s;
}


//############################ verifyMail
function verifyMail(email){
	if(email==null || email == "")  {
		return false;
	}else{
		var pos_at=email.indexOf("@");
		var restmail=email.substring(pos_at,email.length);
		var pos_point=restmail.indexOf(".");
		if ((pos_at < 1)||(pos_point<1)){
			return false;
		}

 	}
 	return true;
}