how to embed HTML code into the javacript codes ?

when i want use some html codes into the some scripts, then it doesn't work or visitor just see source of HTML that i inserted! no its effect ...

sample problem:

<script type="text/javascript">
		            var sayHello = new LiveValidation('sayHello', { validMessage: '<br/><a href="index.html"><img src="hello.jpg" border="0" valign="bottom"></a>', wait: 500});
		            sayHello.add(Validate.Presence, {failureMessage: "test"});
		            sayHello.add(Validate.Format, {pattern: /^hello$/i, failureMessage: "test" } );
</script>

Code (markup):

do i need use document.write to cover HTML codes ? then its working ?

 

I don't know where your "sayHello" object comes from, so i'd say you should use document.write.

 

The proper way of adding HTML is via the DOM. Here's how you would insert an image:

var image = document.createElement( 'img' );
image.src = 'http://www.imagelink.com';
image.setAttribute( 'width', '100px' );
image.setAttribute( 'height', '100px' );
document.body.appendChild( image );

Code (markup):

The quickest way, but will write your HTML wherever your script is located on the page, is using:

document.write( '<p>here is some html</p>' );

Code (markup):

You can also use innerHTML:

document.getElementById( 'my_div' ).innerHTML = '<p>here is some html</p>';

Code (markup):

 

If you write many dom elements use innerHTML property, or you can use dom node manipulation for a single element.