function visibilityChange(element,newclass) {
	element.style.visibility = newclass;
	}

function showPredesign() {
    document.getElementById('li_pre').style.color="#F3AB1B";
	 document.getElementById('predesign').style.visibility="visible";
}

function hidePredesign() {
    document.getElementById('li_pre').style.color="#fff";
    document.getElementById('predesign').style.visibility="hidden";
}

function showDesign() {
    document.getElementById('li_design').style.color="#F3AB1B";
	 document.getElementById('design').style.visibility="visible";
}

function hideDesign() {
    document.getElementById('li_design').style.color="#fff";
    document.getElementById('design').style.visibility="hidden";
}

function showMill() {
    document.getElementById('li_mill').style.color="#F3AB1B";
	 document.getElementById('mill').style.visibility="visible";
}

function hideMill() {
    document.getElementById('li_mill').style.color="#fff";
    document.getElementById('mill').style.visibility="hidden";
}

function showCase() {
    document.getElementById('li_case').style.color="#F3AB1B";
	 document.getElementById('case').style.visibility="visible";
}

function hideCase() {
    document.getElementById('li_case').style.color="#fff";
    document.getElementById('case').style.visibility="hidden";
}

function showFurn() {
    document.getElementById('li_furn').style.color="#F3AB1B";
	 document.getElementById('furn').style.visibility="visible";
}

function hideFurn() {
    document.getElementById('li_furn').style.color="#fff";
    document.getElementById('furn').style.visibility="hidden";
}

function showFinish() {
    document.getElementById('li_finish').style.color="#F3AB1B";
	 document.getElementById('finish').style.visibility="visible";
}

function hideFinish() {
    document.getElementById('li_finish').style.color="#fff";
    document.getElementById('finish').style.visibility="hidden";
}

function showInstall() {
    document.getElementById('li_install').style.color="#F3AB1B";
	 document.getElementById('install').style.visibility="visible";
}

function hideInstall() {
    document.getElementById('li_install').style.color="#fff";
    document.getElementById('install').style.visibility="hidden";
}