code: function _GetAttValPos($Att) {
  		if ($this->pST_Src===false) $this->pST_Src = substr($this->Txt, $this->PosBeg, $this->pST_PosEnd - $this->PosBeg + 1 );
  		$a = ' '.$Att.'="';
  		$p0 = strpos($this->pST_Src, $a);
  		if ($p0!==false) {
  			$p1 = $p0 + strlen($a);
  			$p2 = strpos($this->pST_Src, '"', $p1);
  			if ($p2!==false) return array($p1, $p2-$p1, $p0, $p2-$p0+1);
  		}
  		return false;
  	}
docs: This method is lazy because it assumes the attribute is separated by a space and its value is delimited by double-quote.