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/*

************************************************************


  Note: Original routine taken from BluPlusPlus 2 see:

  http://www.datadosen.se/jalbum/forum/thread.jspa?threadID=1458


  ExhibitPlus: Keyboard support

    Keys:

      RIGHT arrow  	: next page

      LEFT arrow   	: previous page

      // Page UP     	: index page (no longer used)

      HOME         	: first page

      END          	: last page

      S,s,ESC          	: toggle start/stop slide show

      I,i          	: toggle exif info (when appropriate)

      Z,z			: zoom image (when appropriate)	

    Tested on: IE6, Mozzila 1.4, Netscape 7.1, Opera 7.2

    Bugs:

     - HOME,END, NUM+, NUM-  doesn't work in Opera

************************************************************

*/


var takenAction = false;


//IE&Gecko Code

function IEGeckoKeyPress(oEvent) {

	if (!oEvent) var oEvent = window.event;

	if (oEvent.keyCode) myKeyCode = oEvent.keyCode;

	else if (oEvent.which) myKeyCode = oEvent.which;

	if (oEvent.repeat || takenAction) {	return;	}

	if (myKeyCode >= 16 && myKeyCode <= 18) { return; }

	if (oEvent.shiftKey) { myKeyCode += 1000; }

	if (oEvent.ctrlKey)  { myKeyCode += 2000; }

	if (oEvent.altKey)   { myKeyCode += 4000; }

	//alert(oEvent.type + "=" + myKeyCode);

	myKeyPress(myKeyCode);

}


function myKeyPress(myKeyCode) {

	switch (myKeyCode) {

		case 39:					// RIGHT arrow

		case 107:					// NUM +

			takenAction = true;

			nextPage();

			break;

		case 37:					// LEFT arrow

		case 109:					// NUM -

			takenAction = true; 

			prevPage();

			break;

//		case 33: 					// Page UP

//			takenAction = true;

//			indexPage();

//			break;

		case 36:					// HOME

			takenAction = true;

			firstPage();

			break;

		case 35:					// END

			takenAction = true;

			lastPage();

			break;

		case 83:					// S,s

		case 27:					// ESC

			if ( isSlideShow ) {

				// Only if i have slide show

				takenAction = true;

				navSlideShow();

			}

			break;

		case 73:					// I,i

			takenAction = true;

			navToggleInfo();

			break;

//		case 34:					// Page DOWN

		case 90:					// Z,z

			takenAction = true;

			zoom();

			break;

		default:	 

			//alert(oEvent.type + "=" + myKeyCode);

			break;

		}

}


function initKeyboard() {

	document.onkeydown = IEGeckoKeyPress;

}


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