function hidePage(pagename) {
if(pagename.length < 1) { return; }
document.getElementById(pagename).style.display = "none";
}
function showPage(pagename) {
if(pagename.length < 1) { return; }
document.getElementById(pagename).style.display = "block";
}
function reversePageDisplay(pagename) {
if(pagename.length < 1) { return; }
if(document.getElementById(pagename).style.display == "none") { 
document.getElementById(pagename).style.display = "block"; }
else { 
document.getElementById(pagename).style.display = "none"; }
}

var objPage=null;
		function showPage(pageName){
			if(objPage)objPage.style.display='none';
			objPage=document.getElementById(pageName);
			objPage.style.display='block';
			document.getElementById("page0").style.display='none';
		}
		function hidePage(pagename) {
if(pagename.length < 0) { return; }
document.getElementById(pagename).style.display = "none";
}