var DHTML = false, DOM = false, MSIE4 = false, NS4 = false, OP = false;

if (document.getElementById) {
 DHTML = true;
 DOM = true;
} else {
 if (document.all) {
   DHTML = true;
   MSIE4 = true;
 } else {
   if (document.layers) {
     DHTML = true;
     NS4 = true;
   }
 }
}
if (window.opera) {
 OP = true;
}

function getElement (Mode, Identifier, ElementNumber) {
 var Element, ElementList;
 if (DOM) {
   if (Mode.toLowerCase() == "id") {
     Element = document.getElementById(Identifier);
     if (!Element) {
       Element = false;
     }
     return Element;
   }
   if (Mode.toLowerCase() == "name") {
     ElementList = document.getElementsByName(Identifier);
     Element = ElementList[ElementNumber];
     if (!Element) {
       Element = false;
     }
     return Element;
   }
   if (Mode.toLowerCase() == "tagname") {
     ElementList = document.getElementsByTagName(Identifier);
     Element = ElementList[ElementNumber];
     if (!Element) {
       Element = false;
     }
     return Element;
   }
   return false;
 }
 if (MSIE4) {
   if (Mode.toLowerCase() == "id" || Mode.toLowerCase() == "name") {
     Element = document.all(Identifier);
     if (!Element) {
       Element = false;
     }
     return Element;
   }
   if (Mode.toLowerCase() == "tagname") {
     ElementList = document.all.tags(Identifier);
     Element = ElementList[ElementNumber];
     if (!Element) {
       Element = false;
     }
     return Element;
   }
   return false;
 }
 if (NS4) {
   if (Mode.toLowerCase() == "id" || Mode.toLowerCase() == "name") {
     Element = document[Identifier];
     if (!Element) {
       Element = document.anchors[Identifier];
     }
     if (!Element) {
       Element = false;
     }
     return Element;
   }
   if (Mode.toLowerCase() == "layerindex") {
     Element = document.layers[Identifier];
     if (!Element) {
       Element = false;
     }
     return Element;
   }
   return false;
 }
 return false;
}

function getAttribute (Mode, Identifier, ElementNumber, AttributeName) {
 var Attribute;
 var Element = getElement(Mode, Identifier, ElementNumber);
 if (!Element) {
   return false;
 }
 if (DOM || MSIE4) {
   Attribute = Element.getAttribute(AttributeName);
   return Attribute;
 }
 if (NS4) {
   Attribute = Element[AttributeName]
   if (!Attribute) {
      Attribute = false;
   }
   return Attribute;
 }
 return false;
}

function getContent (Mode, Identifier, ElementNumber) {
 var Content;
 var Element = getElement(Mode, Identifier, ElementNumber);
 if (!Element) {
   return false;
 }
 if (DOM && Element.firstChild) {
   if (Element.firstChild.nodeType == 3) {
     Content = Element.firstChild.nodeValue;
   } else {
     Content = "";
   }
   return Content;
 }
 if (MSIE4) {
   Content = Element.innerText;
   return Content;
 }
 return false;
}

function setContent (Mode, Identifier, ElementNumber, Text) {
 var Element = getElement(Mode, Identifier, ElementNumber);
 if (!Element) {
   return false;
 }
 if (DOM && Element.firstChild) {
   Element.firstChild.nodeValue = Text;
   return true;
 }
 if (MSIE4) {
   Element.innerText = Text;
   return true;
 }
 if (NS4) {
   Element.document.open();
   Element.document.write(Text);
   Element.document.close();
   return true;
 }
}