function ClearSelKeyWord(objId)
{
objId.value="";
}

function SearchKeywords() {

   var pno = document.getElementById("txtkeyword").value;
   if (pno=="") {
        alert('Enter Your KeyWord.');
   }
   else{
   
	    window.location.href='search_result.aspx?key='+ encodeURI(pno);
	}
}