var CurrentImage = "";

function popImage(MainImg){
	var Gallery = document.getElementById("Gallery");

	if (CurrentImage!="") {
		CurrentImage.style.display = "none";
	}

	CurrentImage = MainImg;
	
	Gallery.style.display = "block";
	MainImg.style.display = "block";
	
	adjustMargin(492,300,MainImg);
}

function adjustMargin(maxWidth,maxHeight,imgObject){
	var newWidth = 0;
	var newHeight = 0;
	
	newWidth = (maxWidth - imgObject.width) / 2 ;
	newHeight = (maxHeight - imgObject.height) / 2 ;
	imgObject.style.margin = newHeight + "px " + newWidth + "px " + newHeight + "px " + newWidth + "px";
}

function closeImage(){
	document.getElementById("Gallery").style.display = "none";
}