jQuery(function($){

$('h1','#textblock').each(
    function(){
		$(this).replaceWith("<h1><img src='http://www.steerprop.com/header_images/h1/"+$(this).html()+".gif' alt='"+$(this).html()+"'/></h1>");
    }
);

$('h2','#textblock').each(
    function(){
		$(this).replaceWith("<h2><img src='http://www.steerprop.com/header_images/h2/"+$(this).html()+".gif' alt='"+$(this).html()+"'/></h2>");
    }
);

$('h3','.column','#textblock').each(
    function(){
		$(this).replaceWith("<h3><img src='http://www.steerprop.com/header_images/h2_column/"+$(this).html()+".gif' alt='"+$(this).html()+"'/></h3>");
    }
);
 
});