/*******************************************************************/      
      
// 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/
// CODES HAVE BEEN EXPANDED BY Saeed Ebrahimian of PersianBlog.com
      
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, 
   0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 
   0x0038, 0x0039, 0x003A, 0x0643, 0x003E, 0x003D, 0x003C, 0x061F, 
   0x066C, 0x0624, 0x200C, 0x0698, 0x0649, 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
];            
            
function FKeyDown() {
	if (window.event.shiftKey && window.event.altKey) {
		langFarsi=!langFarsi;
		return false;
	}
	return true;
}

function FKeyPress() {
   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;
}