function isnumeric(e)
{
    var keyChar = getKeyString(e);
    var regex = /\d|\t/
    return regex.test(keyChar)
}

function getKeyCode(keyStroke) {
   var keyCode = (keyStroke.keyCode) ? keyStroke.keyCode : keyStroke.which;
   return keyCode;
}

function getKeyString(keyStroke) {
   var keyCode = getKeyCode(keyStroke);
   var keyString = String.fromCharCode(keyCode).toLowerCase();
}

function isReturn(e)
{
    return getKeyCode(e) == 13;
}

function getTextBoxValue()
{
   window.location.href = '~/default.aspx?section=search&str=' + document.getElementById('txtSearch').value;
    alert("he");
}