function popupform(myform, windowname, params)
{
if (! window.focus) return true;
window.open('', windowname, params);
myform.target = windowname;
return true;
}

function getLayer( strId )
{
	try
	{
		obj = document.getElementById( strId );
	}
	catch( e )
	{
		obj = document[strId];
	}
	return obj;
}

function getImage( strId )
{
	try
	{
		obj = document.getElementById( strId );
	}
	catch( e )
	{
		obj = document.images[strId];
	}
	return obj;
}

function showPulldown()
{
	window.clearTimeout( objTimeout );
	objPulldown = getLayer( "pulldown" );
	objPulldown.style.visibility = "visible";
}

function hidePulldownExec()
{
	objPulldown = getLayer( "pulldown" );
	objPulldown.style.visibility = "hidden";
}

function hidePulldown()
{
	objTimeout = window.setTimeout( "hidePulldownExec()", 1 );
}

function switchImgOn( iIndex )
{
	//showPulldown();
	objImage = getImage( "navImg" + iIndex );
	objImage.src = arrImgOn[iIndex].src;
}

function switchImgOff( iIndex )
{
	objImage = getImage( "navImg" + iIndex );
	objImage.src = arrImg[iIndex].src;
	//hidePulldown();
}

var objTimeout = null;

var arrImg = new Array();
var arrImgOn = new Array();

arrImg[1] = new Image(); 
arrImg[1].src = "/img/nav_bollmannsruh.gif";
arrImgOn[1] = new Image(); 
arrImgOn[1].src = "/img/navon_bollmannsruh.gif";  
arrImg[2] = new Image(); 
arrImg[2].src = "/img/nav_frankfurt.gif";
arrImgOn[2] = new Image(); 
arrImgOn[2].src = "/img/navon_frankfurt.gif";  
arrImg[3] = new Image(); 
arrImg[3].src = "/img/nav_leipzig.gif";
arrImgOn[3] = new Image(); 
arrImgOn[3].src = "/img/navon_leipzig.gif";  
arrImg[4] = new Image(); 
arrImg[4].src = "/img/nav_osnabrueck.gif";
arrImgOn[4] = new Image(); 
arrImgOn[4].src = "/img/navon_osnabrueck.gif";  
arrImg[5] = new Image(); 
arrImg[5].src = "/img/nav_mainz.gif";
arrImgOn[5] = new Image(); 
arrImgOn[5].src = "/img/navon_mainz.gif";
arrImg[6] = new Image(); 
arrImg[6].src = "/img/nav_salzburg.gif";
arrImgOn[6] = new Image(); 
arrImgOn[6].src = "/img/navon_salzburg.gif";
arrImg[7] = new Image(); 
arrImg[7].src = "/img/nav_rheingau.gif";
arrImgOn[7] = new Image(); 
arrImgOn[7].src = "/img/navon_rheingau.gif";