/* DHTML-Bibliothek */
/* thanks to selfhtml.org */

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;
		}
}