//window.resizeTo(400,300);
var newWindow = null
function windowOpener(loadpos,IntW,IntH)
{	
	if (! newWindow || newWindow.closed)
	{
  	newWindow = window.open(loadpos,"surveywin","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no,width="+IntW+",height="+IntH+",top=150,left=150");
	newWindow.focus();
	}else
	{
		newWindow.focus();
	}
}


var flag=false;
function DrawImage(ImgD,ImgW,ImgH){
   var image=new Image();
   var ImgW=ImgW;
   var ImgH=ImgH;
   image.src=ImgD.src;
   if(image.width>0 && image.height>0){
    flag=true;
    if(image.width/image.height>= ImgW/ImgH){
     if(image.width>ImgW){ 
     ImgD.height=(image.height*ImgW)/image.width; 
                                               
     ImgD.width=ImgW;
     }else{
     ImgD.width=image.width;  
     ImgD.height=image.height;
     }
    // ImgD.alt=""+image.width+"กม"+image.height;
     }
    else{
     if(image.height>ImgH){ 
     ImgD.width=(image.width*ImgH)/image.height; 
     ImgD.height=ImgH;     
     }else{
     ImgD.width=image.width;  
     ImgD.height=image.height;
     }
   //  ImgD.alt=""+image.width+"กม"+image.height;
     }
    }
} 

function DateSelector(selYear, selMonth, selDay)
{
    this.selYear = selYear;
    this.selMonth = selMonth;
    this.selDay = selDay;
    this.selYear.Group = this;
    this.selMonth.Group = this;
 
 if(window.document.all != null) // IE
    {
        this.selYear.attachEvent("onchange", DateSelector.Onchange);
        this.selMonth.attachEvent("onchange", DateSelector.Onchange);
    }
    else 
    {
        this.selYear.addEventListener("change", DateSelector.Onchange, false);
        this.selMonth.addEventListener("change", DateSelector.Onchange, false);
    }

    if(arguments.length == 4) 
        this.InitSelector(arguments[3].getFullYear(), arguments[3].getMonth() + 1, arguments[3].getDate());
    else if(arguments.length == 6) 
	
        this.InitSelector(arguments[3], arguments[4], arguments[5]);
    else 
    {
        var dt = new Date();
        this.InitSelector(dt.getFullYear(), dt.getMonth() + 1, dt.getDate());
    }
}


DateSelector.prototype.MinYear = 1900;


DateSelector.prototype.MaxYear = (new Date()).getFullYear();


DateSelector.prototype.InitYearSelect = function()
{

   for(var i = this.MaxYear; i >= this.MinYear; i--)
    {
        var op = window.document.createElement("OPTION");
        
        op.value = i;
        
        op.innerHTML = i;
        
        this.selYear.appendChild(op);
    }
}


DateSelector.prototype.InitMonthSelect = function()
{
    for(var i = 1; i < 13; i++)
    {
        var op = window.document.createElement("OPTION");
        if (i<10)
		{
		op.innerHTML = "0" + i;
		}
		else
		{		
		op.innerHTML = i;
		}
		op.value = i;
        
        
        
        this.selMonth.appendChild(op);
    }
}

DateSelector.DaysInMonth = function(year, month)
{
    var date = new Date(year, month, 0);
    return date.getDate();
}

DateSelector.prototype.InitDaySelect = function()
{
    var year = parseInt(this.selYear.value);
    var month = parseInt(this.selMonth.value);
    
    var daysInMonth = DateSelector.DaysInMonth(year, month);
    
    this.selDay.options.length = 0;
 
 for(var i = 1; i <= daysInMonth ; i++)
    {
        var op = window.document.createElement("OPTION");
        
        op.value = i;
        
        if (i<10)
		{
		op.innerHTML = "0" + i;
		}
		else
		{		
		op.innerHTML = i;
		}
        
        this.selDay.appendChild(op);
    }
}

DateSelector.Onchange = function(e)
{
    var selector = window.document.all != null ? e.srcElement : e.target;
    selector.Group.InitDaySelect();
}

DateSelector.prototype.InitSelector = function(year, month, day)
{
    this.selYear.options.length = 0;
    this.selMonth.options.length = 0;
    
    this.InitYearSelect();
    this.InitMonthSelect();
    
    this.selYear.selectedIndex = this.MaxYear - year;
    this.selMonth.selectedIndex = month - 1;
    
    this.InitDaySelect();
    
    this.selDay.selectedIndex = day - 1;
}