function HideContent(d) {
	if(d.length < 1) {
		return;
	}
	document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
	if(d.length < 1) {
		return;
	}
	//alert(d);
	document.getElementById(d).style.display = "block";
}
function ReverseContentDisplay(d) {
	if(d.length < 1) {
		return;
	}
	if(document.getElementById(d).style.display == "none") {
		document.getElementById(d).style.display = "block";
	} else {
		document.getElementById(d).style.display = "none";
	}
}
// popup window
function NewWindow(mypage, myname, w, h, scroll) {
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars=no,resizable=yes,status=yes'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) {
		win.window.focus();
	}
}