function showPage(page) {
	hideContent();
	document.getElementById('contentframe').style.display="block";
	document.getElementById(page).style.display="block";
}

function showHome() {
	hideContent();
	document.getElementById('homeframe').style.display="block";
	document.getElementById('home').style.display="block";
	}
	


function hideContent() {   
	hide=document.getElementsByTagName('div');
    for( var i = 0; i < hide.length; ++i ) {
        if (hide[i].className == 'content') {
        	hide[i].style.display="none";
    	}
    }
	document.getElementById('contentframe').style.display="none";
	document.getElementById('homeframe').style.display="none";
	document.getElementById('home').style.display="none";
}