/*****************************************************************************/
/* Mouseover Funktion für Navigation
/*****************************************************************************/
function navigation(currentObj) {
	var currentImg = document.getElementById(currentObj.firstChild.id);
	var defaultPosition = "0px";
	var highlightPosition = "-30px";
	// mouseover
	if (! currentImg.style.top || currentImg.style.top == defaultPosition) {
		currentImg.style.top = highlightPosition;
	}
	// mouseout
	else {
		currentImg.style.top = defaultPosition;
	}
}

function mOver(name)
    {
      document.images[name+"a"].style.display="none";
      document.images[name+"b"].style.display="block";
    }
    
function mOut(name)
{
	document.images[name+"b"].style.display="none";
    document.images[name+"a"].style.display="block";
}