var myOriginalHeight	= 0;
var myCurrentHeight		= 0;

function getImageHeight(myHeight) {
	myOriginalHeight	= myHeight;
	myCurrentHeight		= 450;
	document.getElementById('GalleryImage').height = 450;
}

function changeImageHeight() {
	if (myCurrentHeight == 450) {
		myCurrentHeight = myOriginalHeight;
		document.getElementById('GalleryImage').height = myOriginalHeight;
		document.getElementById('GalleryImage').className = 'zoomout';
	}
	else {
		myCurrentHeight = 450;
		document.getElementById('GalleryImage').height = 450;
		document.getElementById('GalleryImage').className = 'zoomin';
	}
}