function closeAll() {
    var elements = new Array();
	elements[0] = "swap1";
	elements[1] = "swap2";
	elements[2] = "swap3";
	elements[3] = "swap4";
	elements[4] = "swap5";
	elements[5] = "swap6";
	elements[6] = "swap7";
	elements[7] = "swap8";
	for (i=0; i<elements.length; i++) {
	  if (document.getElementById(elements[i])) {
//	    alert(elements[i] + " exists.");
        document.getElementById(elements[i]).style.display = "none";
//      } else {
//	    alert(elements[i] + " does not exist.");
      }	  
	}
  }
  function openPop(windowName) {
    closeAll();
    document.getElementById(windowName).style.display = "block";
  }