var pic = 1;  
	   var picNo = 1; 
	   var Current1 = 1; 
	   var Current2 = 2; 
	   var CurrentPlace = 0;
	   
       function wechsle() {
	    pic = Math.floor(Math.random() * 2) +1 ;
		while(CurrentPlace ==pic){
		pic = Math.floor(Math.random() * 2) +1 ;
		}
		CurrentPlace = pic;
		picNo = Math.floor(Math.random() * 9) +1;
		while(Current1==picNo | Current2==picNo){
	    	picNo = Math.floor(Math.random() * 9) +1;
			}
			
			if(pic == 1)
		{document.image1.src = "grafik/mglass"+String(picNo)+".jpg";
		Current1=picNo;
		}
			if(pic == 2)
		{document.image2.src = "grafik/mglass"+String(picNo)+".jpg";
		Current2=picNo;
		}
		
	    setTimeout("wechsle()", 1749);
		}