var lang=1; // 1: Farsi, 0: English
// Farsi keyboard map based on ISIRI-2901
var farsikey =
[
	0x0020, 0x0021, 0x061B, 0x066B, 0x00A4, 0x066A, 0x060C, 0x06AF,
	0x0029, 0x0028, 0x002A, 0x002B, 0x0648, 0x002D, 0x002E, 0x002F,
	0x06F0, 0x06F1, 0x06F2, 0x06F3, 0x06F4, 0x06F5, 0x06F6, 0x06F7,
	0x06F8, 0x06F9, 0x003A, 0x06A9, 0x003E, 0x003D, 0x003C, 0x061F,
	0x066C, 0x0624, 0x200C, 0x0698, 0x064A, 0x064D, 0x0625, 0x0623,
	0x0622, 0x0651, 0x0629, 0x00BB, 0x00AB, 0x0621, 0x004E, 0x005D,
	0x005B, 0x0652, 0x064B, 0x0626, 0x064F, 0x064E, 0x0056, 0x064C,
	0x0058, 0x0650, 0x0643, 0x062C, 0x005C, 0x0686, 0x00D7, 0x0640,
	0x200D, 0x0634, 0x0630, 0x0632, 0x064A, 0x062B, 0x0628, 0x0644,
	0x0627, 0x0647, 0x062A, 0x0646, 0x0645, 0x067E, 0x062F, 0x062E,
	0x062D, 0x0636, 0x0642, 0x0633, 0x0641, 0x0639, 0x0631, 0x0635,
	0x0637, 0x063A, 0x0638, 0x007D, 0x007C, 0x007B, 0x007E
];
// on Alt+Shift, switch language
function FKeyDown()
{
	if(window.event.shiftKey && window.event.altKey)
	{
		if(lang == 0)
		{
			lang=1;
			window.defaultStatus="Farsi Mode";
		}
		else
		{
			lang=0;
			window.defaultStatus="English Mode";
		}
		lang=1;
		return false;
	}
	return true;
}
// change the Farsi
function FKeyPress()
{
	var key=window.event.keyCode;
	// Avoid processing if control or higher than ASCII (i.e., in Arabic Windows)
	if(key < 0x0020 || key >= 0x00FF)
		return;
	if(lang == 1)
	{	//If Farsi
		if(key == 0x0020 && window.event.shiftKey) // Shift-space -> ZWNJ
			window.event.keyCode=0x200C;
		else
		{
			if(key == 96)
			{
				window.event.keyCode=farsikey[109-0x0020];
			}
			else
			{
				if(key == 92)
				{
					window.event.keyCode=farsikey[67-0x0020];
				}
				else
				{
					window.event.keyCode=farsikey[key-0x0020];
				}
			}
		}
	}
	return true;
}