//=============================================
var lastkey = 0 ;
var farsi = true ;
var s = new Array(32,33,34,35,36,37,1548,1711,41,40,215,43,
                  1608,45,46,47,48,49,50,51,52,53,54,55,56,
                  57,58,1603,44,61,46,1567,64,1616,1584,125,
                  1609,1615,1609,1604,1570,247,1600,1548,47,
                  8217,1583,215,1563,1614,1569,1613,1601,
                  8216,123,1611,1618,1573,126,1580,1688,
                  1670,94,95,1662,1588,1584,1586,1609,1579,
                  1576,1604,1575,1607,1578,1606,1605,1574,
                  1583,1582,1581,1590,1602,1587,1601,1593,
                  1585,1589,1591,1594,1592,60,124,62,1617)
var b = navigator.userAgent.toLowerCase() ;
var msie  = (b.indexOf('msie')>-1)  ? true : false ;
var gecko = (b.indexOf('gecko')>-1) ? true : false ;
var opera = (b.indexOf('opera')>-1) ? true : false ;
//=============================================
function convert(fld,e) {
		if (msie) {
			if (event.keyCode == 13) event.keyCode = null;
			
			if (event.keyCode)
			{
				k = event.keyCode;
				if (k>128) {
					alert("لطفاً صفحه کلید را در حالت انگلیسی قرار دهید") ;
					return false ;
				}
				if (farsi && k>32 && k<128) event.keyCode = s[k-32] ;
			}
		}
	
		if (gecko) {
			if (e.which == 13) e.which = null;
			
			if (e.which)
			{
				k = e.which;
				if (farsi) {
					if (k>31 && k<128) {
						document.getElementsByName("a")[0].value = k ;
						var EVT = document.createEvent("KeyEvents") ;
								EVT.initKeyEvent("keypress", true, true, document.defaultView, e.ctrlKey, e.altKey, e.shiftKey, e.metaKey, 0, String.fromCharCode(s[k-32]).charCodeAt(0)) ;
						e.preventDefault() ;
						e.target.dispatchEvent(EVT) ;
					}
					else {
						a = parseInt(document.getElementsByName("a")[0].value) ;
						if (isNaN(a)) {
							alert("لطفاً صفحه کلید را در حالت انگلیسی قرار دهید") ;
							return false ;
						}
					}
				}
			}
		}
		
		if (opera) {
			if (event.keyCode == 13) event.keyCode = null;
			
			if (event.keyCode)
			{
				k = event.keyCode;
				if (k>128) {
					alert("لطفاً صفحه کلید را در حالت انگلیسی قرار دهید") ;
					return false ;
				}
				if (farsi) {
					if (k>31 && k<128) {
						fld.value  = fld.value + String.fromCharCode(s[k-32]) ;
						return false ;
					}
				}
			}
		}
}
//=============================================
function rtl_ltr(fld,btn) {
	var xfld = document.getElementsByName(fld)[0]
	if (xfld.style.direction == "ltr") {
		xfld.style.textAlign = "right" ;
		xfld.style.direction = "rtl" ;
		btn.value = "RTL" ;
	}
	else {
		xfld.style.textAlign = "left" ;
		xfld.style.direction = "ltr" ;
		btn.value = "LTR" ;
	}
	xfld.focus() ;
}
//=============================================
function en_fa(fld,btn){
	farsi = !farsi ;
//	if (farsi) { document.images.imgLng.src="ed_fa.gif" ; }
//	else { document.images.imgLng.src="ed_en.gif" ; }
	if (farsi) { btn.value = "FA" ; }
	else { btn.value = "EN" ; }
//	document.getElementsByName(fld)[0].focus() ;
	document.all[fld].focus() ;
}
//=============================================
function check_lng(strBtn){
//	if (farsi) { document.images.imgLng.src="ed_fa.gif" ; }
//	else { document.images.imgLng.src="ed_en.gif" ; }
	if (farsi) { document.getElementsByName(strBtn)[0].value = "FA" ; }
	else { document.getElementsByName(strBtn)[0].value = "EN" ; }
}
//=============================================
function set_lng(fa){
	farsi = fa ;
}
//=============================================