var language='f';

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 FKeyPress() {
	var evtobj=window.event? event : e
   var key = evtobj.keyCode;
   if (key < 0x0020 || key >= 0x00FF) 
      return;
   if (language=='f') {
      var ValChar=String.fromCharCode(key);
      var validate="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ[];,'`\\"
      var el = event.srcElement; 

      if (validate.indexOf(ValChar) != -1 ) // Detect persian letter
      if (el.value.charCodeAt(el.value.length-1) == 0x06cc)  // Replace persian ye if needed
      {
         el.value = el.value.slice(0, -1);
         el.value += String.fromCharCode(0x064a); // Use arabic ye
      }
      if (key == 0x0020 && evtobj.shiftKey)
         evtobj.keyCode = 0x200C;
      else 
	 evtobj.keyCode = farsikey[key - 0x0020];
   }
  return true;
}


function Changelang(whatimage) {
            if(language == 'f') {
                language='e';
                whatimage.src='langeng.gif';
                whatimage.title='Change language to persian' 
            }
            else {
                language='f';
                whatimage.src='langfar.gif';
                whatimage.title='Change language to english' 
            }
}