function hover(element, eventType)
{
	if(eventType=='mouseover')
	{
		var children = element.childNodes;
		var extension;
		for (var i = 0; i < children.length; i++)
		{
			if (children[i].nodeName == 'IMG')
			{
				extension = children[i].src.substring(children[i].src.length-4, children[i].src.length);
				children[i].src = children[i].src.substring(0, children[i].src.length-4)+'H'+extension;
				i = children.length;
			}
		}
	}
	
	if(eventType=='mouseout')
	{
		var children = element.childNodes;
		for (var i = 0; i < children.length; i++)
		{
			if (children[i].nodeName == 'IMG')
			{
				extension = children[i].src.substring(children[i].src.length-4, children[i].src.length);
				children[i].src = children[i].src.substring(0, children[i].src.length-5)+extension;
				i = children.length;
			}
		}
	}
}