/* 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(document.layers && !OP) {
   DHTML = 1;
   NS = 1;
 }
}

function getElem(p1,p2,p3) {
 var Elem;
 if(DOM) {
   if(p1.toLowerCase()=="id") {
     if (typeof document.getElementById(p2) == "object")
     Elem = document.getElementById(p2);
     else Elem = void(0);
     return(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 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();
// hideLayer();

function showMarkArea(layername, mapname, areaname) 
{
	// statt getElementsByTagName(..) --> getElementsByName(layername);
	// (wenn name= in area-tag drin ist..)

	offsetx= 12;
	offsety= 12;
  
	objarea = document.getElementById(areaname);
	objmap = getElem("id","Map",null);

	// coords in x1,y1,x2,y2 auslesen:
	strcoords = objarea.coords;
	
	pos = strcoords.indexOf(","); 
	x1 = strcoords.slice(0,pos); 
	
	strcoords = strcoords.slice(pos+1);
	
	pos = strcoords.indexOf(","); 
	y1 = strcoords.slice(0,pos); 
	
	strcoords = strcoords.slice(pos+1);

	pos = strcoords.indexOf(","); 
	x2 = strcoords.slice(0,pos); 
	y2 = strcoords.slice(pos+1);

	// positionieren:
	mapx=0;
	mapy=0;

	markx = x1 - offsetx; 
	marky = y1 - offsety;

	if (DOM) {
	  	getElem("id",layername,null).style.top = eval(mapy + marky) + "px";
	  	getElem("id",layername,null).style.left = eval(mapx + markx) + "px";
	}

  	if (DOM || MS) {
	  	if (!DOM) {
			getElem("id",layername,null).style.top = eval(mapy) + eval(marky);
	  		getElem("id",layername,null).style.left = eval(mapx) + eval(markx);
	  	}
	  	getElem("id",layername,null).style.visibility = "visible";
  	}
  	else 
  		if (NS) {
	  		getElem("id",layername,null).visibility = "show";
			getElem("id",layername,null).top = eval(objmap.top) + eval(marky);
	  		getElem("id",layername,null).left = eval(objmap.left) + eval(markx);
  		}
}




function hideMark(layername) 
{
	if(DOM || MS)
  		getElem("id",layername,null).style.visibility = "hidden";
  	if(NS)
 	 	getElem("id",layername,null).visibility = "hide";
}