function Trim(sString){
    while (sString.substring(0,1) == ' '){
        sString = sString.substring(1, sString.length);
    }
    while (sString.substring(sString.length-1, sString.length) == ' '){
        sString = sString.substring(0,sString.length-1);
    }
    return sString;
}

function CheckMail(mail){
	var expression = /^[_a-z0-9+-]+(\.[_a-z0-9+-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)+$/;
	if (!expression.test(mail)){
	   return 0;
	}else{
		return 1;
	}
}


function CheckBasicChars(text){
	var expression = /^[A-Za-z0-9-_]*$/;
	if (!expression.test(text)){
	   return 0;
	}else{
		return 1;
	}
}