function IsNumeric(expression) {
    var nums = "0123456789";
    if (expression.length == 0) return (false);
    for (var n = 0; n < expression.length; n++) {
        if (nums.indexOf(expression.charAt(n)) == -1) return (false);
    }
    return (true);
}

function popup(url, name, height, width) {
    var options = "height=" + height + ",width=" + width + ",scrollbars=no,toolbar=no,location=no,resizable=no"; 
    window.open(url, name, options);
}

function CloseWindow() {

    window.close();
}

function inputNumericValuesOnly(event) {
    if (!(event.keyCode == 45 || event.keyCode == 46 ||
            event.keyCode == 48 || event.keyCode == 49 ||
            event.keyCode == 50 || event.keyCode == 51 || 

            event.keyCode == 52 || event.keyCode == 53 ||
            event.keyCode == 54 || event.keyCode == 55 ||
            event.keyCode == 56 || event.keyCode == 57 ||
            event.keyCode == 8 || event.keyCode == 190 ||
            event.keyCode == 37 || event.keyCode == 39 ||
            event.keyCode == 16)) {
            
        event.returnValue = false;
    }
}