function isSafari() {
	var rez = false;
	var agt=navigator.userAgent;
	if(agt.indexOf('Safari')>-1)
	  rez = true;
	return rez;
 }
 
 function replaceSmartQuotes(field) {
    var str;
    if(field.tagName=='TEXTAREA' || field.tagName=='textarea') {
	  if(isSafari())
        str = field.value;
      else
        str = field.innerText;
	}
    else {
      str = field.value;
	}
    var rez = "";
    for(i=0, size=str.length; i<size; i++) {
      code = str.charCodeAt(i);
      if(code==8216 || code==8217 || code==96)
        rez = rez + "\'";
      else {
        if(code==8220 || code==8221)
          rez = rez + '"';
        else
          rez = rez + str.charAt(i);
      }
    }
    if(field.tagName=='TEXTAREA' || field.tagName=='textarea')
	  if(isSafari())
        field.value = rez;
      else
        field.innerText = rez;
    else
      field.value = rez;
  }