//=============================================
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,
                  1670,94,95,1662,1588,1584,1586,1610,1579,
                  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) {
		k = event.keyCode ;
		if (k>128) {
			alert("لطفا صفحه کلید را در حالت انگلیسی قراردهید") ;
			return false ;
		}
		if (farsi && k>32 && k<128) event.keyCode = s[k-32] ;
	}

	if (gecko) {
		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("لطفا صفحه کلید را در حالت انگلیسی قراردهید") ;
					return false ;
				}
			}
		}
	}
		
	if (opera) {
		k = event.keyCode ;
		if (k>128) {
			alert("لطفا صفحه کلید را در حالت انگلیسی قراردهید") ;
			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) { btn.value = "EN" ; }
	else { btn.value = "FA" ; }
	document.getElementsByName(fld)[0].focus() ;
}
//=============================================