var lang = 1;   // 1: Farsi, 0: English 

// Farsi keyboard map based on ISIRI-2901 
var farsikey = [ 
   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, 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) { 
    if (lang == 0) { lang = 1; } 
    else { lang = 0; } 
    return false; 
  } 
  return true; 
} 

// change the Farsi 
function FKeyPress() { 
  var key = window.event.keyCode; 
   // Avoid processing if control or higher than ASCII (i.e., in Arabic Windows) 
  if (key < 0x0020 || key >= 0x00FF) return; 
  if (lang == 1) { //If Farsi 
      if (key == 0x005C) { key= 67; }; 
      if (key == 0x0054) { key= 0x200C; }; 
      if (key == 0x0060) {  key = 109; }; 
         if (key != 0x200C)
         {
            window.event.keyCode = farsikey[key - 0x0020]; 
         }
         else
         {
            window.event.keyCode = key; 
         } 
  } 
return true; 
} 

function insertCommaUnit()
{

var price;
		price="";
	   field=document.getElementById("txtUnitPrice");
	   while(field.value.indexOf(',')!=-1)
	   {
	    field.value=field.value.replace(',','');
	    }
	   
		txt_field=document.getElementById("ttd");
		txt_field=field.value.length;
		var counter=0;
		for(var i=txt_field-1;i>=0;i--)
		{
		price=field.value.charAt(i)+price;
		counter++;
		if(counter%3==0&&i>0)
		{
		price=','+price;
		counter=0;
		}
		}
			field.value=price;
}
function insertCommaTotal()
	{
	var price;
		price="";
		field=document.getElementById("txtTotalPrice");
	   while(field.value.indexOf(',')!=-1)
	   {
	    field.value=field.value.replace(',','');
	    }
	   
		txt_field=document.getElementById("ttd");
		txt_field=field.value.length;
		var counter=0;
		for(var i=txt_field-1;i>=0;i--)
		{
		price=field.value.charAt(i)+price;
		counter++;
		if(counter%3==0&&i>0)
		{
		price=','+price;
		counter=0;
		}
		}
			field.value=price;
	}
	
	function insertCommaUnitFrom()
{
var price;
		price="";
		field=document.getElementById("txtUnitFrom");
	   while(field.value.indexOf(',')!=-1)
	   {
	    field.value=field.value.replace(',','');
	    }
	   
		txt_field=document.getElementById("ttd");
		txt_field=field.value.length;
		var counter=0;
		for(var i=txt_field-1;i>=0;i--)
		{
		price=field.value.charAt(i)+price;
		counter++;
		if(counter%3==0&&i>0)
		{
		price=','+price;
		counter=0;
		}
		}
			field.value=price;
}
function insertCommaTotalFrom()
	{
	var price;
		price="";
		field=document.getElementById("txtTotalFrom");
	   while(field.value.indexOf(',')!=-1)
	   {
	    field.value=field.value.replace(',','');
	    }
	   
		txt_field=document.getElementById("ttd");
		txt_field=field.value.length;
		var counter=0;
		for(var i=txt_field-1;i>=0;i--)
		{
		price=field.value.charAt(i)+price;
		counter++;
		if(counter%3==0&&i>0)
		{
		price=','+price;
		counter=0;
		}
		}
			field.value=price;
	}
	
	function insertCommaUnitTo()
{
var price;
		price="";
		field=document.getElementById("txtUnitTo");
	   while(field.value.indexOf(',')!=-1)
	   {
	    field.value=field.value.replace(',','');
	    }
	   
		txt_field=document.getElementById("ttd");
		txt_field=field.value.length;
		var counter=0;
		for(var i=txt_field-1;i>=0;i--)
		{
		price=field.value.charAt(i)+price;
		counter++;
		if(counter%3==0&&i>0)
		{
		price=','+price;
		counter=0;
		}
		}
			field.value=price;
}
function insertCommaTotalTo()
	{
	var price;
		price="";
		field=document.getElementById("txtTotalTo");
	   while(field.value.indexOf(',')!=-1)
	   {
	    field.value=field.value.replace(',','');
	    }
	   
		txt_field=document.getElementById("ttd");
		txt_field=field.value.length;
		var counter=0;
		for(var i=txt_field-1;i>=0;i--)
		{
		price=field.value.charAt(i)+price;
		counter++;
		if(counter%3==0&&i>0)
		{
		price=','+price;
		counter=0;
		}
		}
			field.value=price;
	}
	
	function insertComma(id)
	{
	var price;
		price="";
		field=document.getElementById(id);
	   while(field.value.indexOf(',')!=-1)
	   {
	    field.value=field.value.replace(',','');
	    }
	   
		txt_field=field.value.length;
		var counter=0;
		for(var i=txt_field-1;i>=0;i--)
		{
		price=field.value.charAt(i)+price;
		counter++;
		if(counter%3==0&&i>0)
		{
		price=','+price;
		counter=0;
		}
		}
			field.value=price;
	}
	
	 function checkLength(colntrolName,len)
	   {
	  
	       field=document.getElementById(colntrolName);
	       var cont=document.getElementById("count");
	       var  countField=field.value.length;
		   if(countField>=len)
		   {
		      countField=len;
		      field.value=field.value.substring(0,len);
		   }
		   cont.innerHTML=countField;
	    }