// JavaScript Document
function solonif(e){
	var unicode=e.charCode? e.charCode : e.keyCode

	if (unicode==8 ||  unicode==13 || (unicode>=48 && unicode<=57) || (unicode>=65 && unicode<=90)|| (unicode>=97 && unicode<=122)) //if not a number
		return true; //disable key press
	else return false;
}