.NET

Below is a simple example of Number Validation in Textbox of ASP.Net Using Regular Expression Validator. It will also allow all decimal number, excluding all alphanumeric characters. <asp:TextBox ID="AssetsTextBox" runat="server" Width="240px"></asp:TextBox> <asp:RegularExpressionValidator ID="revAssets" runat="server" ErrorMessage="Assets must be a number" Font-Bold="False" Font-Size="Small" ValidationExpression="^\d*[0-9](|.\d*[0-9]|,\d*[0-9])?$" ControlToValidate="AssetsTextBox" Display="Dynamic" > </asp:RegularExpressionValidator>

Below example will help you to learn how to Display some text Upside down on the webpage using CSS3.

<html>
<head>
<title>Display Text Up side down Example...</title>
<style type="text/css">
.displayUpsideDown 
{
    -o-transform: rotate(-180deg);  /* Opera 10.5 */
    -webkit-transform: rotate(-180deg);  /* Safari 3.1+, Chrome */
    filter:  progid:DXImageTransform.Microsoft.BasicImage(rotation=2);  /* IE6,IE7 */
    ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=2)"; /* IE8 */
    -moz-transform: rotate(-180deg);  /* FF3.5+ */        
    
    position: absolute; 
}
</style>
</head>
<body>
<div class="displayUpsideDown">ENJOY SAMPLE TEXT HERE!!!</div>
</body>
</html>

.NET

Number Validation in Textbox of ASP.NET Using Regular Expression Validator

Display Text Upside down using CSS3