function fback() 
{
	history.go(-1);
	return false;
}	

function fDeleteConfirm() 
{
	if (window.confirm("Are you sure want to delete this record?")) 
		return true;
	else
		return false;
}

function fClose()
{
	window.close();
}

function numbersonly(){
	if (event.keyCode<48||event.keyCode>57){
		return false;
	} else{
		return true;
	}	
}

var ErrMsg = "Right Click Disabled";
function disableRightClick(btnClick)
{
if (navigator.appName == "Netscape" && btnClick.which == 3) // check for netscape and right click
{ 
alert(ErrMsg);
return false;
}
else if (navigator.appName =="Microsoft Internet Explorer" && event.button == 2) // for IE and Right Click
{
alert(ErrMsg);
return false;
}
}
document.onmousedown = disableRightClick;
history.forward(1);

function keyhandler(e) {
    if (document.layers)
        Key = e.which;
    else
 
        Key = window.event.keyCode;
 //alert(Key);
    if (((Key>39) && (Key<58)) ||
 ((Key>96) && (Key<123)) ||
 ((Key>63) && (Key<91)) ||
 (Key==38) ||
 (Key==32) ||
 (Key==37) ||
 (Key==13))
 {
  return true;
 }
  if (!e) e=window.event;
 
 return false;
}
document.onkeypress = keyhandler;