/*******************************************************************/      
      
// Original idea is from:      
// http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/farsitools/#dirlist and      
// http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/farsitools/php/date/scripts/
      
var langFarsi = true;
var farsikey = [	// Farsi keyboard map based on Iran Popular Keyboard Layout      
	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, 0x0698, 0x0686, 0x00D7, 0x0640,            
	0x067E, 0x0634, 0x0630, 0x0632, 0x06CC, 0x062B, 0x0628, 0x0644,            
	0x0627, 0x0647, 0x062A, 0x0646, 0x0645, 0x0626, 0x062F, 0x062E,            
	0x062D, 0x0636, 0x0642, 0x0633, 0x0641, 0x0639, 0x0631, 0x0635,            
	0x0637, 0x063A, 0x0638, 0x007D, 0x007C, 0x007B, 0x007E            
];            
            
function FKeyDown() {
	try {
		if (window.event.shiftKey && window.event.altKey) {
			langFarsi=!langFarsi;
			return false;
		}
		return true;
	} catch(e) {
		return true;
	}
}

function FKeyPress() {
	try {
	   var key = window.event.keyCode;
	   if (key < 0x0020 || key >= 0x00FF)
	      return;
	   if (langFarsi) {
	      var el = event.srcElement;
	      var objRegExp = new RegExp("[A-Za-z\x27\x2C\x3B\x5B\x5C\x5D\x7C]");
	      var validate_key = objRegExp.test(String.fromCharCode(key));
	      if ((validate_key || (key==92)) && (key != 0x200C) && (el.value.lastIndexOf(String.fromCharCode(1740)) == el.value.length - 1) && el.value.length > 0) {
	         el.value = el.value.slice(0, -1);
	         el.value += String.fromCharCode(1610);
	      }
	      if (key == 0x0020 && window.event.shiftKey)
	         window.event.keyCode = 0x200C;
	      else
	         window.event.keyCode = farsikey[key - 0x0020];
	   }
	   return true;
	} catch(e) {
		return true;
	}
}