/* DHTML-Bibliothek */

var DHTML = 0, DOM = 0, MS = 0, NS = 0, OP = 0;

function DHTML_init() {
  if (window.opera)
    OP = 1;
  if(document.getElementById) {
    DHTML = 1;
    DOM = 1;
  }
  if(document.all && !OP) {
    DHTML = 1;
    MS = 1;
  }
  if (window.netscape && window.screen && !DOM && !OP){
    DHTML = 1;
    NS = 1;
  }
}

function getElem(p1,p2,p3) {
 var Elem;
 if(DOM) {
   if(p1.toLowerCase()=="id") {
     Elem = document.getElementById(p2);
     return Elem == null ? void(0) : Elem;
   }
   else if(p1.toLowerCase()=="name") {
     if (typeof document.getElementsByName(p2) == "object")
     Elem = document.getElementsByName(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="tagname") {
     if (typeof document.getElementsByTagName(p2) == "object" ||
        (OP && typeof document.getElementsByTagName(p2) == "function"))
     Elem = document.getElementsByTagName(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
 else if(MS) {
   if(p1.toLowerCase()=="id") {
     if (typeof document.all[p2] == "object")
     Elem = document.all[p2];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="tagname") {
     if (typeof document.all.tags(p2) == "object")
     Elem = document.all.tags(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="name") {
     if (typeof document[p2] == "object")
     Elem = document[p2];
     else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
 else if(NS) {
   if(p1.toLowerCase()=="id" || p1.toLowerCase()=="name") {
   if (typeof document[p2] == "object")
     Elem = document[p2];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="index") {
    if (typeof document.layers[p2] == "object")
     Elem = document.layers[p2];
    else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
}

function getCont(p1,p2,p3) {
   var Cont;
   if(DOM && getElem(p1,p2,p3) && getElem(p1,p2,p3).firstChild) {
     if(getElem(p1,p2,p3).firstChild.nodeType == 3)
       Cont = getElem(p1,p2,p3).firstChild.nodeValue;
     else
       Cont = "";
     return(Cont);
   }
   else if(MS && getElem(p1,p2,p3)) {
     Cont = getElem(p1,p2,p3).innerText;
     return(Cont);
   }
   else return void(0);
}

function getAttr(p1,p2,p3,p4) {
   var Attr;
   if((DOM || MS) && getElem(p1,p2,p3)) {
     Attr = getElem(p1,p2,p3).getAttribute(p4);
     return(Attr);
   }
   else if (NS && getElem(p1,p2)) {
       if (typeof getElem(p1,p2)[p3] == "object")
        Attr=getElem(p1,p2)[p3][p4]
       else
        Attr=getElem(p1,p2)[p4]
         return Attr;
       }
   else return void(0);
}

function getStyle (p1,p2,p3) {
  // cross-browser function to get an object's style object given its id
  if((DOM || MS) && getElem(p1,p2,p3)) {
	// W3C DOM
    return getElem(p1,p2,p3).style;
  }
  else if (NS && getElem(p1,p2)) {
	return getElem(p1,p2);
  }
  else {
	return void(0);
  }
} // getStyle

function setVisibility(p1, p2, p3, newVisibility) {
  // get a reference to the cross-browser style object and make sure the object exists
  var styleObject = getStyle(p1, p2, p3);
  if(styleObject) {
	styleObject.visibility = newVisibility;
	return true;
  }
  else {
	// we couldn't find the object, so we can't change its visibility
	return void(0);
  }
} // changeObjectVisibility


function setCont(p1,p2,p3,p4) {
   if(DOM && getElem(p1,p2,p3) && getElem(p1,p2,p3).firstChild)
     getElem(p1,p2,p3).firstChild.nodeValue = p4;
   else if(MS && getElem(p1,p2,p3))
     getElem(p1,p2,p3).innerText = p4;
   else if(NS && getElem(p1,p2,p3)) {
     getElem(p1,p2,p3).document.open();
     getElem(p1,p2,p3).document.write(p4);
     getElem(p1,p2,p3).document.close();
   }
}

DHTML_init();