function shuffle_images(nodeid)
{
/*--------------------------------------------------------------*/
/*-- Replace imgs in Left, Right Margins of Asia Program site --*/
/*--  Larger image, different filename format for homepage    --*/
/*--   than remainder of pages.       -jgp 11/18/2008         --*/
/*--------------------------------------------------------------*/
var ScreenW = screen.width;
var ScreenH = screen.height;
var asia_leftmarginDiv=document.getElementById("asia_leftmargin");
var asia_rightmarginDiv = document.getElementById("asia_rightmargin");
 
var leftHTML =asia_leftmarginDiv.innerHTML;
var rightHTML = asia_rightmarginDiv.innerHTML;

var imgpath = "http://ashinstitute.harvard.edu/design/asia/images";

var NodeIDInSet = nodeid in set(1269, 1351, 1352, 1355, 1357, 1359, 1360, 1361,1362,1846);

var NewWorldNode = nodeid in set(1874, 1872);

//--alert('nodeIDInSet:'+NodeIDInSet);

//--if homepage---
if (nodeid == 1255)
	{ 	var num_hm_img_sets = 3; 
		var img_set_num = Math.round(Math.random() * (num_hm_img_sets-1)) + 1;	
		if (img_set_num < 10){	img_set_num = '0' + img_set_num;}
		var leftimgsrc =imgpath + '/rotate/hm_set_' + img_set_num + '_left.gif';
		var rightimgsrc =imgpath + '/rotate/hm_set_' + img_set_num + '_right.gif';	
		
		leftHTML = "<img align='left' width='80px'  src='" + leftimgsrc  + "' id='hm_left_img' name='hm_left_img'  alt='&nbsp;' />";

		rightHTML = "<img align='right' src='" + rightimgsrc + "' id='hm_right_img' name='hm_right_img' alt='right pattern'/>";
		
		
		
	}
else if (NodeIDInSet==true)
    { //--don't show left image for vietnam program pages-----
			var num_hm_img_sets = 9; 
		var img_set_num = Math.round(Math.random() * (num_hm_img_sets-1)) + 1;	
		if (img_set_num < 10){	img_set_num = '0' + img_set_num;}
		var leftimgsrc=imgpath + '/subpage/left_img' + img_set_num + '.gif';
		var rightimgsrc=imgpath + '/subpage/right_img' + img_set_num + '.gif';
		
		leftHTML = "<div style='width:70px'>&nbsp;</div>";

		rightHTML = "<img align='right' src='" + rightimgsrc + "' id='hm_right_img' name='hm_right_img' alt='right pattern'/>";
		
		
	}
	
	
	
else
	{ 	var num_hm_img_sets = 9; 
		var img_set_num = Math.round(Math.random() * (num_hm_img_sets-1)) + 1;	
		if (img_set_num < 10){	img_set_num = '0' + img_set_num;}
		var leftimgsrc=imgpath + '/subpage/left_img' + img_set_num + '.gif';
		var rightimgsrc=imgpath + '/subpage/right_img' + img_set_num + '.gif';	
		
		leftHTML = "<img align='left' width='80px'  src='" + leftimgsrc  + "' id='hm_left_img' name='hm_left_img'  alt='&nbsp;' />";

		rightHTML = "<img align='right' src='" + rightimgsrc + "' id='hm_right_img' name='hm_right_img' alt='right pattern'/>";
		
	}
	
	



//--Only switch left images occasionally on non-homepages to reduce flicker.(isEven(img_set_num) &&-- 
if (nodeid > 1255) 
  {  asia_leftmarginDiv.innerHTML = leftHTML; }

asia_rightmarginDiv.innerHTML = rightHTML;
  
  
}


function ToggleMenuBar(toggle)
{
	var asia_pgms_menubarDiv=document.getElementById("asia_pgms_menubar");
   
	if (asia_pgms_menubarDiv!== null)
	{
		

		
new Draggable('asia_pgms_menubar', {constraint: 'vertical'});
		
		
	  if (toggle=="on")
        {asia_pgms_menubarDiv.style.display="block";}
	  else
		{asia_pgms_menubarDiv.style.display="none"}
	}

}




function isEven(value){
	if (value%2 == 0)
		return true;
	else
		return false;
}


  function set ()
  {
    var result = {};

    for (var i = 0; i < arguments.length; i++)
      result[arguments[i]] = true;



    return result;
  }