/*function map(nr) {
	if (document.images[1].src == "http://www2.htlwrn.ac.at/d08009/pictures/plan_a.jpg") {
		document.images[1].src = "pictures/plan_" + nr + ".jpg";
	} else {
		document.images[1].src = "http://www2.htlwrn.ac.at/d08009/pictures/plan_a.jpg";
	}
  }

function map_n(nr) {
	if (document.images[1].src == "http://www2.htlwrn.ac.at/d08009/pictures/map_a.jpg") {
		document.images[1].src = "pictures/map_" + nr + ".jpg";
	} else {
		document.images[1].src = "http://www2.htlwrn.ac.at/d08009/pictures/map_a.jpg";
	}
  }*/

function map(nr) {
	if (document.getElementById("map_o").src == "http://www2.htlwrn.ac.at/d08009/pictures/plan_a.jpg") {
		document.getElementById("map_o").src = "pictures/plan_" + nr + ".jpg";
	} else {
		document.getElementById("map_o").src = "http://www2.htlwrn.ac.at/d08009/pictures/plan_a.jpg";
	}
  }

function map_n(nr) {
	if (document.getElementById("map").src == "http://www2.htlwrn.ac.at/d08009/pictures/map_a.jpg") {
		document.getElementById("map").src = "pictures/map_" + nr + ".jpg";
	} else {
		document.getElementById("map").src = "http://www2.htlwrn.ac.at/d08009/pictures/map_a.jpg";
	}
  }