function AlphabeticOnly(e) {
    var key;
    key = e.which ? e.which : e.keyCode;
    if ((key >= 65 && key <= 91) || (key >= 97 && key <= 123) || key == 8 || key == 9 || key == 32 || (key >= 37 && key <= 40) || key == 46) {
        return true;
    }
    else {
        //alert("please enter characters only" + key);
        return false;
    }
} 
function AlphaNumericOnly(e) {
    var key;
    key = e.which ? e.which : e.keyCode;
    if ((key >= 65 && key <= 90) || (key >= 97 && key <= 122) || key == 8 || key == 9 || key == 32 || (key >= 37 && key <= 40) || key == 46 || (key >= 48 && key <= 57)) {
        
        return true;
    }
    else 
    {  
        return false;
    }
}


function NumericOnly(e) {
    var key;
    key = e.which ? e.which : e.keyCode;
    if (key == 8 || key == 32 || (key >= 37 && key <= 40) || key == 46 || (key >= 48 && key <= 57) || key == 9) {

        return true;
    }
    else {
        //alert("please enter Numbers only");
        return false;
    }
}