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 FFocus(value) {
	langFarsi = value;
	return true;
}

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;
}

function submitenter(myfield,e) {
var key;
	if(window.event)
		key = window.event.keyCode;
	else if(e)
		key = e.which;
	if(key > 31 && key < 128) {
		if (window.event)
			window.event.keyCode=' !"#$%،گ)(×+و-./0123456789:ك,=.؟@ِذ}ىُىلآ÷ـ،/’د×؛َءٍف‘{ًْإ~جژچ^_پشذزيثبلاهتنمئدخحضقسفعرصطغظ<|>ّ'.charCodeAt(key-32);
		else
			if (e)
				e.which=' !"#$%،گ)(×+و-./0123456789:ك,=.؟@ِذ}ىُىلآ÷ـ،/’د×؛َءٍف‘{ًْإ~جژچ^_پشذزيثبلاهتنمئدخحضقسفعرصطغظ<|>ّ'.charCodeAt(key-32);
		}
	return true;
}

function PersianStrCmp(str1, str2) {
var	i = 0;
	while(i < str1.length && i < str2.length && str1.substr(i, 1) == str2.substr(i, 1))
		i++;
	if(i == str1.length && i == str2.length)
		return 0;
	return " ابپتثجچحخدذرزژسشصضطظعغفقكگلمنوهي".indexOf(str1.substr(i, 1)) -
        			" ابپتثجچحخدذرزژسشصضطظعغفقكگلمنوهي".indexOf(str2.substr(i, 1));
}

function KeyTrace(selObj) {
var SearchStr1 = "";
var SearchStr2 = "";
var OldSelObjName = "";
var	i, key;
	if(window.event)
		key = window.event.keyCode;
	if(key == 27) { // Reset the search buffer, and the selection!
		SearchStr1 = "";
		SearchStr2 = "";
		selObj.selectedIndex = 0;
		return;
	}
	if(OldSelObjName=="")
		OldSelObjName = selObj.name;
	if(OldSelObjName != selObj.name) {
		SearchStr1 = "";
		SearchStr2 = "";
	}
	OldSelObjName = selObj.name;
	if (window.event) {
		SearchStr1 += String.fromCharCode(key);
		window.event.keyCode = ' !"#$%،گ)(×+و-./0123456789:ك,=.؟@ِذ}ىُىلآ÷ـ،/’د×؛َءٍف‘{ًْإ~جژچ^_پشذزيثبلاهتنمئدخحضقسفعرصطغظ<|>ّ'.charCodeAt(key - 32);
		SearchStr2 += ' !"#$%،گ)(×+و-./0123456789:ك,=.؟@ِذ}ىُىلآ÷ـ،/’د×؛َءٍف‘{ًْإ~جژچ^_پشذزيثبلاهتنمئدخحضقسفعرصطغظ<|>ّ'.charAt(key - 32);
		var found = false;
		for(var i = 0; i < selObj.options.length; i++) {
			var item = selObj.options[i].text.toString();
			if(key>64 && key<123){
				if(item.indexOf(SearchStr2)==0){
					found = true;
					break;
				}
			}
			else {
				if(item.indexOf(SearchStr1)==0){
					found = true;
					break;
				}
			}
		}
		if(found)
			selObj.selectedIndex = i;
	}
	return true;
}