Sitemde kalan son 3 hatayı aşağıya yazıyorum kodlarıyla birlikte, çözmeme yardım ederseniz memnun olurum

1. Warning Byte-Order Mark found in UTF-8 File.

The Unicode Byte-Order Mark (BOM) in UTF-8 encoded files is known to cause problems for some text editors and older browsers. You may want to consider avoiding its use until it is better supported.

bu hata aşağıdaki kodu koyduğumda oluyor

<script language="JavaScript" type="text/javascript">
   	function hide(id){
   		var divObject=document.getElementById(id);
   		divObject.style.display="none";
   	}
  	function show(id){
  		var divObject=document.getElementById(id);
  		divObject.style.display="block";
 }	
 </script>
2. Error duplicate specification of attribute X (ÇÖZÜLDÜ)

You have specified an attribute more than once. Example: Using the "height" attribute twice on the same "img" tag.
* Line 179, column 243: duplicate specification of attribute "value"

…cus="if(this.value=='Aranacak kelimeyi yazınız...') this.value='';" value="" />

<div class="search">
<div id="searchbox">
<form action="<?php bloginfo('home'); ?>" method="get">
<input type="text" class="textfield" name="s" size="24" value="Aranacak kelimeyi yazınız..." onblur="if(this.value=='') this.value='Aranacak kelimeyi yazınız...';" onfocus="if(this.value=='Aranacak kelimeyi yazınız...') this.value='';" value="<?php the_search_query(); ?>" />
<input type="submit" class="button" value="" />
</form>
</div>
</div>

3. Error character X not allowed in prolog (ÇÖZÜLDÜ)

Line 1, column 1: character "" not allowed in prolog

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w…
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" <?php language_attributes(); ?>>