// JavaScript Document


function getWindowHeight() {
	var windowHeight = 0;
	if (typeof(window.innerHeight) == 'number') {
		windowHeight = window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			windowHeight = document.documentElement.clientHeight;
		}
		else {
			if (document.body && document.body.clientHeight) {
				windowHeight = document.body.clientHeight;
			}
		}
	}
	return windowHeight;
}


function setheight() {
    
	
    var windowHeight = getWindowHeight();
    var frameHeight = document.getElementById('frame').clientHeight;

	document.getElementById('frame').style.marginTop = ( windowHeight - frameHeight ) / 2 + "px";
		

}

window.onload = function() {
	setheight();
}
window.onresize = function() {
	setheight();
}