function section(k) {

for (i=1; i<50; i++)
        {
        if (i==k)
                {
                eval('document.getElementById(\'block'+i+'\').style.display=\'block\'');
                eval('document.getElementById(\'link'+i+'\').className=document.getElementById(\'link'+i+'\').className + \' selected\'');
	            }
        else 
                {
                if(document.getElementById('block'+i) != null){
					 eval('document.getElementById(\'block'+i+'\').style.display=\'none\'');
					 eval('document.getElementById(\'link'+i+'\').className=document.getElementById(\'link'+i+'\').className.replace(\'selected\',\'\')');
				}
                }
        }
}


    function load(hId, clas){
      var selecters = document.getElementById(hId).getElementsByTagName('DIV');
      for (var i = 0, l = selecters.length; i < l; i++){
	if (selecters[i].id == clas){
	  selecter(selecters[i]);
	}
      }

    }


    function selecter(sId){
      var sHr = sId;
      var sIs = sHr.getElementsByTagName('A');
      var sNm = sHr.getElementsByTagName('STRONG')[0];
      var sNms = sHr.getElementsByTagName('SPAN')[0];
      var sUl = sHr.getElementsByTagName('UL')[0];
      sNm.onclick = function(){sHr.className == 'open' ? sHr.className = 'close' : sHr.className = 'open';}
	sUl.onmouseover = function(){sHr.className= 'open';}
	sUl.onmouseout = function(){sHr.className= 'close';}
      for (var i = 0, l = sIs.length; i < l; i++){
	sIs[i].onclick = function (){sNms.innerHTML = this.innerHTML; sHr.className = 'close'; }
      }

    }	

function ul2select(hid, sel, foo){
  var select=document.createElement('select');
  var holder = document.getElementById(hid);
  var ul = holder.getElementsByTagName('ul')[0];
  var az = ul.getElementsByTagName('A');
  var createOption = function (a) {
    	var opt = document.createElement('option');
	opt.innerHTML = a.innerHTML;
	opt.value = a.href;
	opt.selected = a.id == sel ? "selected" : "";
	return opt;
  }

  select.onchange = function(){
    if(this.options[this.selectedIndex].value != false) 
      location.href = this.options[this.selectedIndex].value
  };

  var deft = {innerHTML:foo, href:0, id:"x0"};
  select.appendChild(createOption(deft));

  for (var i = 0;it = az[i];i++){
	select.appendChild(createOption(it));
  }
  holder.removeChild(ul);
  holder.appendChild(select);
}


//
// function to show Plot Image Gallery
function swapimage(loadarea, imgUrl)
{
    document.getElementById(loadarea).innerHTML = "<img src='" + imgUrl + "'/>";
}