(function(jQuery){  
    
    jQuery.fn.simpleRollOver = function( options ) {
        var defaults = { prefix: '_on' }
        var settings = jQuery.extend({}, defaults, options); 
        this.each(function(){
            jQuery(this).hover(function(e) {
                jQuery(this).attr( "src", jQuery(this).attr( "src" ).replace(/([^.]*)\.(.*)/, "$1" + settings.prefix + ".$2"));
            }, function() {
                jQuery(this).attr( "src", jQuery(this).attr( "src" ).replace( settings.prefix, '' ));
            });            
        });
    }

    jQuery.fn.activeRollOver = function( options ) {
        var defaults = { prefix: '_on' }
        var settings = jQuery.extend({}, defaults, options); 
        this.each(function(){
            jQuery(this).attr( "src", jQuery(this).attr( "src" ).replace(/([^.]*)\.(.*)/, "$1" + settings.prefix + ".$2"));
            jQuery(this).css("cursor", 'text' );
        });
    }
        
})(jQuery);