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 setContent() {

			if (document.getElementById) {

				var windowHeight = getWindowHeight();

				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';

					}

					else {

						contentElement.style.position = 'static';

					}

				}

			}

		}

		window.onload = function() {

			setContent();

		}

		window.onresize = function() {

			setContent();

		}