//Functions to open and close windows

//Set variable 'pan' to image URL so image can be easily changed in future
// - scalability, maintainability



//Function to open new window name "panWindow", of set dimensions 451x451 pixels,
//50px from top and left.
//focus ensures new window stays on top of document window if other links are used to
//open the same window name in future - scalability

	function openWindow() {
		panWindow = window.open(formwindow,"panWindow", "width=527,height=550,toolbar=yes,scrollbars=yes,resizable=yes,menubar=yes,left=300,top=100");
		panWindow.focus();
	}