function storeCaret(textEl){
if(textEl.createTextRange) textEl.caretPos=document.selection.createRange().duplicate();
}
var lang=1;
var farsikey=[
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 changeLang()
{
if(lang==0){
lang=1;
return true;
}
else{
lang=0;
return true;
}
}

function FKeyDown(txtFrm){
var key=window.event.keyCode;
if(key==145){
if(lang==0){
lang=1;
return true;
}
else{
lang=0;
return true;
}
}
}

function FKeyPress(txtFrm){
var key=window.event.keyCode;

if(key==13){window.event.keyCode=13;return true;}
if(lang==1){
if(key==0x0020 && window.event.shiftKey)
window.event.keyCode=0x200C;
else
window.event.keyCode=farsikey[key-0x0020];
if(farsikey[key-0x0020]==92){
window.event.keyCode=0x0698;
}
if(farsikey[key-0x0020]==8205){
window.event.keyCode=0x067E;
}
}
return true;
}

function change_fa(obj)
{
lang=1;
obj.focus();
}

function change_en(obj)
{
lang=0;
obj.focus();
}