var randNumL = Math.floor(Math.random()*4)+1;
	var randNumR = Math.floor(Math.random()*4)+1;
	document.getElementById("mast-random-l").src = "http://grfx.cstv.com/schools/emma/graphics/emma-07-index-rand-0"+ randNumL + ".jpg";
	document.getElementById("mast-random-r").src = "http://graphics.fansonly.com/schools/emma/graphics/emma-07-index-right-0"+ randNumR + ".jpg";