Searchbox disappeared ?

[apshop]

Hello everyone ,I'm newbie and nobody answer this question

I've installed the matrice theme, searchbox can not be seen in sf-menu ,what can I do to turn it back ? It seems that "searchbox" is disabled for some reason .this is what I see with firebug, the color of the code that belongs to searchbox gray (means that its disabled)?!

 

 

 

<form id="searchbox" method="get" action="search.php">

 

 

<input type="hidden" name="orderby" value="position">

 

<input type="hidden" name="orderway" value="desc">

 

<input type="text" onblur="javascript:if(this.value=='')this.value='search...';"

onfocus="javascript:if(this.value=='search...')this.value='';"

value="search..." name="search_query">