function auf(w)	{

	switch(w) {
                  case '0' : window.open ("proj-car.html", "projektcare", "resizeable=no, scrollbar=no, menubar=no, height=400, width=700"); break;
                  case '1' : window.open ("proj-itb.html", "projektitb", "resizeable=no, scrollbar=no, menubar=no, height=538, width=383"); break;
                  case '2' : window.open ("proj-bog.html", "projektbogarts", "resizeable=no, scrollbar=no, menubar=no, height=538, width=383"); break;
                  case '3' : window.open ("proj-bon.html", "projektbongheads", "resizeable=no, scrollbar=no, menubar=no, height=534, width=550"); break;
                  case '4' : window.open ("video-qu-.html", "videoquirligeruhe", "resizeable=no, scrollbar=yes, menubar=no, height=700, width=550"); break;
                  case '5' : window.open ("video-sch.html", "videoschranken", "resizeable=no, scrollbar=0, menubar=no, height=650, width=550"); break;
                  case '6' : window.open ("video-hau.html", "videohautnahdistanz", "resizeable=no, scrollbar=0, menubar=no, height=760, width=550"); break;
}
}


// -------------------------------------------------------------------------------


function show(id) {
    obj = document.getElementsByTagName("div");
    if (obj[id].style.visibility == 'hidden'){
    obj[id].style.visibility = 'visible';
    }
    else {
    obj[id].style.visibility = 'visible';
    }
}


function hide(id,id1,id2,id3,id4,id5,id6,id7)

	{
	    obj = document.getElementsByTagName("div");

	   	 if (obj[id].style.height == 'visible') {
		    obj[id].style.visibility = 'hidden';
	   }
	   	 else { 
	   	 	obj[id].style.visibility = 'hidden';
	   }

	   	 if (obj[id1].style.visibility == 'visible') {
		    obj[id1].style.visibility = 'hidden';
	   }
	   	 else { 
	   	 	obj[id1].style.visibility = 'hidden';
	   }

	   	 if (obj[id2].style.visibility == 'visible') {
		    obj[id2].style.visibility = 'hidden';
	   }
	   	 else { 
	   	 	obj[id2].style.visibility = 'hidden';
	   }
	   	 if (obj[id3].style.visibility == 'visible') {
		    obj[id3].style.visibility = 'hidden';
	   }
	   	 else { 
	   	 	obj[id3].style.visibility = 'hidden';
	   }
	   	 if (obj[id4].style.height == 'visible') {
		    obj[id4].style.visibility = 'hidden';
	   }
	   	 else { 
	   	 	obj[id4].style.visibility = 'hidden';
	   }

	   	 if (obj[id5].style.visibility == 'visible') {
		    obj[id5].style.visibility = 'hidden';
	   }
	   	 else { 
	   	 	obj[id5].style.visibility = 'hidden';
	   }

	   	 if (obj[id6].style.visibility == 'visible') {
		    obj[id6].style.visibility = 'hidden';
	   }
	   	 else { 
	   	 	obj[id6].style.visibility = 'hidden';
	   }
	   	 if (obj[id7].style.visibility == 'visible') {
		    obj[id7].style.visibility = 'hidden';
	   }
	   	 else { 
	   	 	obj[id7].style.visibility = 'hidden';
	   }	 	   
	}