function numbersOnly(el){	el.value = el.value.replace(/[^0-9]/g, "");}
function noSpecialChr(el){
	!(/^[A-zΑ-ω0-9@. ]*$/i).test(el.value)?el.value = el.value.replace(/[^A-zΑ-ω0-9@. ]/ig,' '):null;
	}