Parse error after editin theme editor

That is the problem. My changes are not there as like it never happened. Where can I find the original copy of functions.php file? And how to install it? Please, excuse me by asking so many questions but I’m totally unaware!
Another issue is that the code ends in line 276 and not in 487 as is says.

<?php

if ( isset( $_GET['latestblogpost'] ) )
	add_action( 'template_redirect', 'easel_latest_blog_post_jump' );

function easel_latest_blog_post_jump() {
	$catnum = 0;
	if (isset($_GET['latestblogpost'])) $catnum = (int)esc_attr($_GET['latestblogpost']);
	if (!empty($catnum)) {
		$args = array(
				'numberposts' => 1,
				'post_type' => 'post',
				'orderby' => 'post_date',
				'order' => 'DESC',
				'post_status' => 'publish',
				'category__in' => array($catnum)
				);
		$qposts = get_posts( $args );
	} else {
		$args = array(
				'numberposts' => 1,
				'post_type' => 'post',
				'orderby' => 'post_date',
				'order' => 'DESC',
				'post_status' => 'publish'
				);
		$qposts = get_posts( $args );
	}
	if (is_array($qposts)) {
		$qposts = reset($qposts);
		wp_redirect( get_permalink( $qposts->ID ) );
	} else {
		wp_redirect( home_url() );
	}
	wp_reset_query();
	exit;
}

if (!function_exists('easel_display_post_title')) {
	function easel_display_post_title() {
		global $post, $wp_query;
		$get_post_title = '';
		if ((easel_themeinfo('disable_page_titles') && is_page()) || (easel_themeinfo('disable_post_titles') && !is_page()) || (is_page('chat') || is_page('forum'))) return;
		if (is_page()) {
			$post_title = "<h2 class=\"page-title\">";
		} else {
			$post_title = "<h2 class=\"post-title\">";
		}
		if (is_home() || is_search() || is_archive() && !is_page()) $post_title .= "<a href=\"".get_permalink()."\">";
		$get_post_title .= get_the_title();
		if (!$get_post_title) $get_post_title = '( No Title )';
		$post_title .= $get_post_title;
		if (is_home() || is_search() || is_archive() && !is_page()) $post_title .= "</a>";
		$post_title .= "</h2>\r\n";
		echo apply_filters('easel_display_post_title',$post_title);
	}
}

if (!function_exists('easel_display_post_thumbnail')) {
	function easel_display_post_thumbnail() {
		global $post, $wp_query;
		if ($post->post_type == 'post') {
			$post_thumbnail = '';
			$link = get_post_meta( $post->ID, 'link', true );
			if (empty($link)) $link = get_permalink();
			if ( has_post_thumbnail() ) {
			the_post_thumbnail();
				if (is_home()) {
					$post_thumbnail = '<div class="post-image"><center><a href="'.$link.'" rel="featured-image" title="Link to '.get_the_title().'">'.get_the_post_thumbnail($post->ID, $size).'</a></center></div>'."\r\n";
						} else {
						$post_thumbnail = '<div class="post-image"><center>'.get_the_post_thumbnail($post->ID, $size).'</center></div>'."\r\n";
			 } else {
				$url_image = get_post_meta($post->ID, 'featured-image', true);
				if (!empty($url_image)) $post_thumbnail = '<div class="post-image"><center><a href="'.$link.'" rel="featured-image" title="Link to "'.get_the_title().'"><img src="'.$url_image.'" title="'.get_the_title().'" alt="'.get_the_title().'"></a></center></div>'."\r\n";
			}
			echo apply_filters('easel_display_post_thumbnail', $post_thumbnail);}
		}
	}
}

if (!function_exists('easel_display_author_gravatar')) {
	function easel_display_author_gravatar() {
		global $post, $wp_query, $is_IE;
		if (is_page()) return;
		if (easel_themeinfo('enable_post_author_gravatar')) {
			$author_get_gravatar = get_avatar(get_the_author_meta('email'), 82, easel_random_default_avatar(get_the_author_meta('email'),get_the_author_meta('display_name')));
			if (!$is_IE) $author_get_gravatar = str_replace('photo', 'photo instant nocorner itxtalt', $author_get_gravatar);
			$author_gravatar = "<div class=\"post-author-gravatar\">".$author_get_gravatar."</div>\r\n";
			echo apply_filters('easel_display_author_gravatar', $author_gravatar);
		}
	}
}

if (!function_exists('easel_display_post_calendar')) {
	function easel_display_post_calendar() {
		global $post, $wp_query;
		if (is_page()) return;
		if (easel_themeinfo('enable_post_calendar')) {
			$post_calendar = "<div class=\"post-calendar-date\"><div class=\"calendar-date\"><span>".get_the_time('M')."</span>".get_the_time('d')."</div></div>\r\n";
			echo apply_filters('easel_display_post_calendar', $post_calendar);
		}
	}
}

if (!function_exists('easel_display_post_author')) {
	function easel_display_post_author() {
		global $post, $authordata;
		if (!easel_themeinfo('disable_author_info_in_posts')) {
			$post_author = "<span class=\"post-author\">".__('by','easel')." <a href=\"".get_author_posts_url( $authordata->ID, $authordata->user_nicename )."\">".get_the_author()."</a></span>\r\n";
			echo apply_filters('easel_display_post_author',$post_author);
		}
	}
}

if (!function_exists('easel_display_post_date')) {
	function easel_display_post_date() {
		global $post;
		if (!easel_themeinfo('disable_date_info_in_posts')) {
			$post_date = "<span class=\"posted-on\">".__('on&nbsp;','easel')."</span><span class=\"post-date\">".get_the_date(get_option('date_format'))."</span>\r\n";
			echo apply_filters('easel_display_post_date',$post_date);
		}
	}
}

if (!function_exists('easel_display_post_time')) {
	function easel_display_post_time() {
		global $post;
		if (!easel_themeinfo('disable_date_info_in_posts') && !easel_themeinfo('disable_posted_at_time_in_posts')) {
			$post_time = "<span class=\"posted-at\">".__('at&nbsp;','easel')."</span><span class=\"post-time\">".get_the_time(get_option('time_format'))."</span>\r\n";
			echo apply_filters('easel_display_post_time',$post_time);
		}
	}
}

if (!function_exists('easel_display_modified_date_time')) {
	function easel_display_modified_date_time() {
		global $post;
		if (!easel_themeinfo('disable_date_info_in_posts') && easel_themeinfo('enable_last_modified_in_posts')) {
			$u_time = get_the_time('U');
			$u_modified_time = get_the_modified_time('U');
			if ($u_modified_time != $u_time) {
				$post_date_time = '<span class="posted-last-modified"> '.__('and modified on','easel').' '.get_the_modified_date(get_option('date_format')).'. ';
				if (!easel_themeinfo('disable_posted_at_time_in_posts')) $post_date_time .= '<span class="posted-last-modified-time"> '.__('at','easel').' '.get_the_modified_time(get_option('time_format')).'</span>'."\r\n";
				echo apply_filters('easel_display_modified_date_time', $post_date_time);
			}
		}
	}
}

if (!function_exists('easel_display_post_category')) {
	function easel_display_post_category() {
		global $post;
		$post_category = '';
		if (!easel_is_bbpress() && !easel_themeinfo('disable_categories_in_posts') && !is_attachment() && ($post->post_type == 'post')) {
			$post_category = "<div class=\"post-cat\">". __('Posted In: ','easel') .get_the_category_list(', ')."</div>\r\n";
		}
		echo apply_filters('easel_display_post_category', $post_category);
	}
}

if (!function_exists('easel_display_post_tags')) {
	function easel_display_post_tags() {
		global $post;
		if (!easel_themeinfo('disable_tags_in_posts')) {
			$post_tags = "<div class=\"post-tags\">".get_the_tag_list(__('└ Tags: ','easel'), ', ', '<br />')."</div>\r\n";
			echo apply_filters('easel_display_post_tags', $post_tags);
		}
	}
}

if (!function_exists('easel_display_comment_link')) {
	function easel_display_comment_link() {
		global $post;
		if ($post->comment_status == 'open' && !is_singular()) { ?>
			<div class="comment-link">
				<?php comments_popup_link('<span class="comment-balloon comment-balloon-empty">&nbsp;</span>'.__('Comment&nbsp;','easel'), '<span class="comment-balloon">1</span> '.__('Comment ','easel'), '<span class="comment-balloon">%</span> '.__('Comments ','easel')); ?>
			</div>
			<?php
		}
	}
}

if (!function_exists('easel_display_blog_navigation')) {
	function easel_display_blog_navigation() {
		global $post, $wp_query;
		if (easel_themeinfo('enable_comments_on_homepage') && (easel_themeinfo('home_post_count') == '1')) {
			$temp_single = $wp_query -> is_single;
			$wp_query -> is_single = true;
		}
		if (is_single() && !is_page() && !is_archive() && !is_search() && ($post->post_type == 'post')) { ?>
			<div class="blognav">
				<?php previous_post_link('<span class="blognav-prev">%link</span>',__('&lsaquo; Prev','easel'), false); ?>
				<?php next_post_link('<span class="blognav-next">%link</span>',__('Next &rsaquo;','easel'), false); ?>
				<div class="clear"></div>
			</div>
		<?php }
		if (easel_themeinfo('enable_comments_on_homepage') && (easel_themeinfo('home_post_count') == '1')) {
			$wp_query -> is_single = $temp_single;
		}
	}
}

if (!function_exists('easel_display_the_content')) {
	function easel_display_the_content() {
		global $post, $wp_query;
		if ((is_archive() || is_search()) && (easel_themeinfo('excerpt_or_content_in_archive') == 'excerpt')) {
			do_action('easel-display-the-content-before');
			the_excerpt();
			do_action('easel-display-the-content-after');
		} else {
			if (!is_single()) { global $more; $more = 0; }
			do_action('easel-display-the-content-before');
			the_content(__('&darr; Read the rest of this entry...','easel'));
			do_action('easel-display-the-content-after');
		}
	}
}

if (!function_exists('easel_display_post')) {
	function easel_display_post() {
		global $post, $wp_query;
		if (!easel_is_bbpress()) easel_display_blog_navigation(); ?>
		<div <?php post_class(); ?>>
			<?php easel_display_post_thumbnail(); ?>
			<div class="post-head"><?php do_action('easel-post-head'); ?></div>
			<div class="post-content">
				<div class="post-info">
					<?php
						if (!easel_is_bbpress()) easel_display_author_gravatar();
						if (!easel_is_bbpress()) easel_display_post_calendar();
						if (is_sticky()) { ?><div class="sticky-image">Featured Post</div><?php }
						if (function_exists('easel_show_mood_in_post')) easel_show_mood_in_post();
					?>
					<div class="post-text">
						<?php
						easel_display_post_title();
						if (!is_page()) {
							easel_display_post_author();
							easel_display_post_date();	easel_display_post_time(); easel_display_modified_date_time();
							if ($post->post_type == 'post') { edit_post_link(__('Edit','easel'), ' <span class="post-edit">', '</span>'); }
							easel_display_post_category();
							if (function_exists('the_ratings') && $post->post_type == 'post') { the_ratings(); }
							do_action('easel-post-info');
							do_action('comic-post-info');
						} ?>
					</div>
				</div>
				<div class="clear"></div>
				<div class="entry">
					<?php easel_display_the_content(); ?>
					<div class="clear"></div>
					<?php do_action('comic-transcript'); ?>
				</div>
				<?php wp_link_pages(array('before' => '<div class="linkpages"><span class="linkpages-pagetext">Pages:</span> ', 'after' => '</div>', 'next_or_number' => 'number')); ?>
				<div class="clear"></div>
				<?php if (!is_page()) { ?>
				<div class="post-extras">
					<?php
						easel_display_post_tags();
						do_action('easel-post-extras');
						easel_display_comment_link();
					?>
					<div class="clear"></div>
				</div>
				<?php } else
					edit_post_link(__('Edit this page.','easel'), '', ''); ?>
			</div>
			<div class="post-foot"><?php do_action('comic-post-foot'); ?><?php do_action('easel-post-foot'); ?></div>
		</div>
		<?php
			do_action('comic-post-extras');
			comments_template('', true);
	}
}

?>

If you please, have a look in all the code. Is there problem in the end?

NeoTechnomad, I did what you said, but… nothing. I’m here again.

This theme was free on wordpress themes. What kind of themes do you propose to use, free or paid ones? And suppose I want to switch to another theme, how can I do it since I can’t log in? Through cplesk do you mean? And how can I do it?
And if i change the theme the parse error will vanish and the blog open again?or the problem will remain?

Yes, I have access at the file manager through cPanel.