Membuat Form Search Box

<form id="searchThis" action="/search" display: inline;" method="get"><input onfocus="if(this.value==this.defaultValue)this.value='';" value=" " type="text" id="searchBox" onblur="if(this.value=='')this.value=this.defaultValue;" style="width: 192px;" vinput="Search this site" name="q"/> <button >Go</button><form>