// JavaScript Document
function PopUpCenter(URL, wratio, hratio, prop)
	{
	var w, h;
	var prop;

	if (wratio == null) wratio = 0.75;
	if (hratio == null) hratio = 0.75;

	if (prop == null) prop = "toolbar=0,scrollbars=0,location=center,status=0,menubar=0,resizable=1";

	w = (wratio <= 1) ? screen.width  * wratio : wratio;
	h = (hratio <= 1) ? screen.height * hratio : hratio;

	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;

	day = new Date();
	id = day.getTime();
	eval("page" + id + " = window.open(URL, '" + id + "', '" + prop + ",height="+h+",width="+w+",top="+wint+",left="+winl+"');");
	}

function findObj(theObj, theDoc)
{
  var p, i, foundObj;

  if(!theDoc) theDoc = document;
  if( (p = theObj.indexOf("?")) > 0 && parent.frames.length)
  {
	theDoc = parent.frames[theObj.substring(p+1)].document;
	theObj = theObj.substring(0,p);
  }
  if(!(foundObj = theDoc[theObj]) && theDoc.all) foundObj = theDoc.all[theObj];
  for (i=0; !foundObj && i < theDoc.forms.length; i++)
	foundObj = theDoc.forms[i][theObj];
  for(i=0; !foundObj && theDoc.layers && i < theDoc.layers.length; i++)
	foundObj = findObj(theObj,theDoc.layers[i].document);
  if(!foundObj && document.getElementById) foundObj = document.getElementById(theObj);

  return foundObj;
}

function showHideLayers()
{
  var i, visStr, obj, args = showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3)
  {
	if ((obj = findObj(args[i])) != null)
	{
	  visStr = args[i+2];
	  if (obj.style)
	  {
		obj = obj.style;
		if(visStr == 'show') visStr = 'visible';
		else if(visStr == 'hide') visStr = 'hidden';
	  }
	  obj.visibility = visStr;
	}
  }
}

function isEmail(str)
	{
	// are regular expressions supported?
	var supported = 0;

	if (window.RegExp)
		{
		var tempStr = "a";
		var tempReg = new RegExp(tempStr);
		if (tempReg.test(tempStr)) supported = 1;
		}

	if (!supported)
		return (str.indexOf(".")> 2) && (str.indexOf("@")> 0);

	var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
	var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
	return (!r1.test(str) && r2.test(str));
	}