function show_win(fName,iHeight,iWidth) 
{
	var style = 'location=no,scrollbars=yes,status=no,toolbar=no,directories=no,menubar=no,resizable=yes,width=' + iWidth + ',height=' + iHeight + "'";
   	if (!window.myWin)
    	myWin = window.open('','RangerFireProtection',style);
    else 
    {
    	if (!myWin.closed) 
    	{
			myWin.close();
			myWin = window.open('','RangerFireProtection',style);
		} 
		else 
			myWin = window.open('','RangerFireProtection',style);
    }
    myWin.location.href = fName;
    myWin.location.href = fName;
}