var	Change_curSelect = -1;

var aChange_link = new Array();
	aChange_link[0] = 'jahnke';
	aChange_link[1] = 'service';
	aChange_link[2] = 'produkte';
	
function findObj(n, d) {
	var p,i,x;
	if(!d) d = document;
	return d.getElementById(n);
}
function getStyle(o) {
	return o.style;
}
function findStyle(id) {
	var o = findObj(id);
	o = getStyle(o);
	return o;
}
function Change_Over(pos){
	window.status = aChange_link[pos];
	if(Change_curSelect != -1){
		Change_ClearLayer(Change_curSelect);
	}
	Change_SetLayer(pos);
	Change_curSelect = pos;
}
function Change_Out(pos) {		
	Change_ClearLayer(pos);
}
function Change_SetLayer(pos){
		obj = findStyle('tophd' + pos);
		obj.visibility = 'visible';
		obj = findStyle('bottom' + pos);
		obj.visibility = 'visible';
		obj = findStyle('bottomft' + pos);
		obj.visibility = 'visible';
}
function Change_ClearLayer(pos){
		obj = findStyle('tophd' + pos);
		obj.visibility = 'hidden';
		obj = findStyle('bottom' + pos);
		obj.visibility = 'hidden';
		obj = findStyle('bottomft' + pos);
		obj.visibility = 'hidden';
}