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 getWindowWidth() {
	var windowWidth = 0;
	if (typeof(window.innerWidth) == 'number') {
		windowWidth = window.innerWidth;
	}else{
		if (document.documentElement && document.documentElement.clientWidth) {
			windowWidth = document.documentElement.clientWidth;
		}else{
			if (document.body && document.body.clientWidth) {
				windowWidth = document.body.clientWidth;
			}
		}
	}
	return windowWidth;
}

function setContent() {
	if (document.getElementById) {
		var windowHeight = getWindowHeight();
		var windowWidth = getWindowWidth();
		if (windowHeight > 0) {
			var contentElement = document.getElementById('content');
			var contentHeight = contentElement.offsetHeight;
			if (windowHeight - contentHeight > 0) {
				contentElement.style.position = 'relative';
				contentElement.style.top = ((windowHeight / 2) - (contentHeight / 2)) + 'px';

				var contentWidth = contentElement.offsetWidth;
				if (windowWidth - contentWidth > 0) {
					contentElement.style.left = ((windowWidth / 2) - (contentWidth / 2)) + 'px';
				}
			}else{
				contentElement.style.position = 'static';
			}
		}
	}
}

window.onload = function() {
	setContent();
}

window.onresize = function() {
	setContent();
}

function EnterKeyOther(e, btn){
	var key;      
	if(window.event)
		key = window.event.keyCode;
	else
		key = e.which;   

	if(key == 13){
		document.getElementById(btn).click();
		return false;
	}else{
		return true;
	}
}