function showImage1() {
	hideElem("contImage2");
	hideElem("contImage3");
	hideElem("contImage4");
	showElem("contImage1");
	var elem = document.getElementById("imageLink_1");
	elem.className = "current";
	var elem = document.getElementById("imageLink_2");
	elem.className = "notCurrent";
	var elem = document.getElementById("imageLink_3");
	elem.className = "notCurrent";
	var elem = document.getElementById("imageLink_4");
	elem.className = "notCurrent";
}

function showImage2() {
	hideElem("contImage1");
	hideElem("contImage3");
	hideElem("contImage4");
	showElem("contImage2");
	var elem = document.getElementById("imageLink_2");
	elem.className = "current";
	var elem = document.getElementById("imageLink_1");
	elem.className = "notCurrent";
	var elem = document.getElementById("imageLink_3");
	elem.className = "notCurrent";
	var elem = document.getElementById("imageLink_4");
	elem.className = "notCurrent";
}

function showImage3() {
	hideElem("contImage1");
	hideElem("contImage2");
	hideElem("contImage4");
	showElem("contImage3");
	var elem = document.getElementById("imageLink_3");
	elem.className = "current";
	var elem = document.getElementById("imageLink_1");
	elem.className = "notCurrent";
	var elem = document.getElementById("imageLink_2");
	elem.className = "notCurrent";
	var elem = document.getElementById("imageLink_4");
	elem.className = "notCurrent";
}

function showImage4() {
	hideElem("contImage1");
	hideElem("contImage2");
	hideElem("contImage3");
	showElem("contImage4");
	var elem = document.getElementById("imageLink_4");
	elem.className = "current";
	var elem = document.getElementById("imageLink_1");
	elem.className = "notCurrent";
	var elem = document.getElementById("imageLink_2");
	elem.className = "notCurrent";
	var elem = document.getElementById("imageLink_3");
	elem.className = "notCurrent";
}

function showElem(elemId) {
	var elem = document.getElementById(elemId);
	elem.style.display = "block";
}

function hideElem(elemId) {
	var elem = document.getElementById(elemId);
	elem.style.display = "none";
}