embedded if statement inside if statement

Im trying to display a set of category header images using the Custom Tax Image plugin.

But I want to only display the image if the image is available, and if it is available I want to display different set of <h1> text depending on what category you are viewing.

So it would be a If statement inside a If statement.

This is what I currently have. But it is not working.

<?php if (function_exists('z_taxonomy_image_url')) {
								if (cat_is_ancestor_of(392, $cat)) {
									echo '<div id="cat-header"><img id="cat-banner" src="' . z_taxonomy_image_url() . '"><p>Restaurants Serving</p><h1>' . single_cat_title(); . '</h1>' . ft_custom_breadcrumbs(); . '</div>';
								} elseif (is_category('392')) {
									echo '<div id="cat-header"><img id="cat-banner" src="' . z_taxonomy_image_url() . '"><p>Restaurants By</p><h1>' . single_cat_title(); . '</h1>' . ft_custom_breadcrumbs(); . '</div>';
								} else {
									echo '<div id="cat-header"><img id="cat-banner" src="' . z_taxonomy_image_url() . '"><p>Restaurants In</p><h1>' . single_cat_title(); . '</h1>' . ft_custom_breadcrumbs(); . '</div>';
								}
						} else {
							echo '<div id="cat-header"><p>Restaurants Serving</p><h1>' . single_cat_title(); . '</h1>' . ft_custom_breadcrumbs(); . '</div>';
						}?>