function navMouseOver(imgnew,imgid) 
{
    if (document.images) 
    { 
        document.images[imgid].src=imgnew;
    }
}

function openwin(page,WinWidth,WinHeight,SB,winname)
        {
                OpenLinkWindow(WinWidth,WinHeight,page,winname,SB);
        }
        function OpenLinkWindow(WinWidth,WinHeight,Link,WindowName,SB)
        {
                LeftPosition = (screen.width) ? (screen.width-WinWidth)/2 : 0;
                TopPosition = (screen.height) ? (screen.height-WinHeight)/4 : 0;
                popupWin = window.open(Link,WindowName,'toolbar=0,width='+WinWidth+',height='+WinHeight+',top='+TopPosition+',left='+LeftPosition+',location=0,directories=0,status=0,menubar=0,scrollbars='+SB+',resizable=1,copyhistory=0');
                popupWin.focus();
        }   

function MM_showHideLayers(id, ev)
{
	
	var OP, DOM, MS, NS;
	// detect browser type
	if (window.opera)
	{
       		OP = 1;
   	}
   	
	if (document.getElementById)
	{
     		DOM = 1;
   	}
   	
	if (document.all && !OP)
	{
     		MS = 1;
   	}
   	
	if (window.netscape && window.screen && !DOM && !OP)
	{
     		NS = 1;
   	}
   	
   	// toggle visibilty
   	if (DOM)
   	{
   		if (ev == 'show')
   		{
   		
   			document.getElementById(id).style.visibility = 'visible';
   		}
   		else
   		{
   			document.getElementById(id).style.visibility = 'hidden';
   		}
   	}
   	
   	else if (MS)
   	{
   		if (ev == 'show')
   		{
   			document.all[id].style.visibility = 'visible';
   		}
   		else
   		{
   			document.all[id].style.visibility = 'hidden';
   		}
   	}
   	else if (NS)
   	{
   		if (ev == 'show')
   		{
   			document.layers[id].visibility = 'show';
   		}
   		else
   		{
   			document.layers[id].visibility = 'hide';
   		}
   	}
}


var alloffString = ""; // fuer allOff()

// hier ist das script, welches alle layer auf einmal deaktiviert 
function allOff( rubrik ) {

        if (!rubrik)
    {
        eval (alloffString);
    }
    else
    {   
        layerName = rubrik + "_layer";

      MM_showHideLayers( layerName, 'hide' );
    }
}