function openBrWindow(theURL,winName,b,h,features) 
{ 			
	var eigenschaft,fenster02;
	x = (screen.width-b)/2;
	y = (screen.height-h)/2;
	var eigenschaften="left="+x+",top="+y+",screenX="+x+",screenY="+y;
	
	eigenschaften= eigenschaften + ",width="+b+",height="+h+","+features;		
	fenster02=window.open(theURL,winName,eigenschaften);			
}

function switchView(obj_id)
{                                                                                                      
	if(document.getElementById(obj_id).style.display == '')
	{
		document.getElementById(obj_id).style.display = 'none';     
	} else {
		document.getElementById(obj_id).style.display = '';
	}		                                                                                                                          
}