window.onload = function(){
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	showContents('profile');
	setTabClick('navprofile','profile');
	setTabClick('navcommunication','communication');
	setTabClick('navevent','event');
	mmsetTabClick('navcontact','contact');

};

function hideHeading() {
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	hide('communicationHeading');
	hide('eventHeading');
	hide('contactHeading');

}

function showContents(contentName){
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	hide('communication'); 
	hide('event'); 
	hide('contact'); 
	show(contentName);
	chengeTabs(contentName);
}
function chengeTabs(contentName){
	var e = document.getElementById('nav');
	e.className = contentName;
}

function setTabClick(li,div) {
	var e = document.getElementById(li).getElementsByTagName('a')[0];
	e.contents = div;
	e.onclick = function(){
		showContents(this.contents);
		return false;
	};
}

function hide(elementId) {
	document.getElementById(elementId).style.display = "none";
}
function show(elementId) {
	document.getElementById(elementId).style.display = "";
}