var imageClicked = false;
var currentImage;

function setVisible(popupId)
{
	if(!imageClicked)
	{
		if(currentImage)
		{
			document.getElementById(currentImage).style.visibility = 'hidden';			
			document.getElementById(currentImage).style.display = 'none';
		}
		document.getElementById(popupId).style.visibility = 'visible';		
		document.getElementById(popupId).style.display = '';
		currentImage = popupId;
	}
}

function requestInvisible(popupId)
{
	if(!imageClicked)
	{
		document.getElementById(popupId).style.visibility = 'hidden';		
		document.getElementById(popupId).style.display = 'none';
	}
}

function freezeImage()
{
	imageClicked = true;
}

function unFreezeImage()
{
	imageClicked = false;
}