function checkforminfox(){
  if (document.frm_searchinfo.keyword.value==""){
      alert("Please Input Keywords!");
      document.frm_searchinfo.keyword.focus();
      return false;
      }
  else
      return true;
}

str="<table border=0 align=center cellpadding=0 cellspacing=0><form name=frm_searchinfo method=post action=/info/esearchin.asp onsubmit='javascript:return checkforminfox();'><tr><td align=center>KeyWords:<input name=keyword class=p9 size=12><table width=100% border=0 cellspacing=0 cellpadding=0><tr><td height=10></td></tr></table><input type=submit value=Go name=Submit class=p9 hidefocus >&nbsp;&nbsp;<font face=Webdings color=#C0C0C0>4</font><a href=/info/esearchinfo.asp>Advanced</a></td></tr></form></table>"

document.write(str)