function magnifier1() {
			document.OpticsBenchApplet.setDefault();
			document.OpticsBenchApplet.setDrag(true);
			document.OpticsBenchApplet.setPropertyDrag(false);
         	document.OpticsBenchApplet.setSize(0.9);
         	document.OpticsBenchApplet.addLens(1.1,1);
         	document.OpticsBenchApplet.addLens(2.1,1);
			document.OpticsBenchApplet.setDrag(false);
			document.OpticsBenchApplet.setPropertyDrag(false);
       	document.OpticsBenchApplet.addPSource(0.1,.2);
}

function magnifier2() {
			document.OpticsBenchApplet.setDefault();
			document.OpticsBenchApplet.setDrag(true);
			document.OpticsBenchApplet.setPropertyDrag(false);
         	document.OpticsBenchApplet.setSize(0.9);
         	document.OpticsBenchApplet.addLens(3.5,1);
			document.OpticsBenchApplet.setDrag(true);
			document.OpticsBenchApplet.setPropertyDrag(false);
       	document.OpticsBenchApplet.addPSource(2.5,.2);
}


function magnifier3() {
			document.OpticsBenchApplet.setDefault();
			document.OpticsBenchApplet.setDrag(true);
			document.OpticsBenchApplet.setPropertyDrag(false);
         	document.OpticsBenchApplet.setSize(0.9);
         	document.OpticsBenchApplet.addLens(2.5,0.7);
			document.OpticsBenchApplet.setDrag(false);
			document.OpticsBenchApplet.setPropertyDrag(false);
       	document.OpticsBenchApplet.addPSource(0.1,.2);
			document.OpticsBenchApplet.addScreen(4.5);
}