// Create a cookie with the specified name and value.
// The cookie expires at the end of the 20th century.
function SetCookie(sName, sValue)
{
  var now = new Date();
  cookie_exp = new Date(now.getFullYear() + 1, now.getMonth(), now.getDay());
  document.cookie = sName + "=" + escape(sValue) + "; expires=" + cookie_exp.toGMTString() + "; path=/"; 
}

// Retrieve the value of the cookie with the specified name.
function GetCookie(sName)
{
  // cookies are separated by semicolons
  var aCookie = document.cookie.split("; ");
  for (var i=0; i < aCookie.length; i++)
  {
    // a name/value pair (a crumb) is separated by an equal sign
    var aCrumb = aCookie[i].split("=");
    if (sName == aCrumb[0]) 
      return unescape(aCrumb[1]);
  }

  // a cookie with the requested name does not exist
  return null;
}
function opnewWin (s, w, h, is_centered)
{	
	if (is_centered == 1)
	{
		var coord = new Array();
		coord = get_center_window_coord(h, w);
		left_pos = coord["x"];
		top_pos = coord["y"];
		winank = window.open(s, "picture", "height=" + h + ",width=" + w + ",,,,,,top=" + top_pos + ",left=" + left_pos);
	}
	else
	{
		winank = window.open (s, "picture", "width= " + w + ", height= " + h);
	}	
}


function get_center_window_coord(h_desc, w_desc)
{
	var coord = new Array("x", "y");
	var swidth=0;
	var sheight=0;
	var left_pos, top_pos;
	h_desc = h_desc || 500;
	w_desc = w_desc || 600;
	if (self.screen) { // for NN4 and IE4
	  swidth = screen.width;
	  sheight = screen.height	  
	} else if (self.java) { // for NN3 with enabled Java
	  var jkit = java.awt.Toolkit.getDefaultToolkit();
	  var scrsize = jkit.getScreenSize();
	  swidth = scrsize.width;
	  sheight = scrsize.height;
	}
	coord["x"] = (swidth/2) - (w_desc/2);
	coord["y"] = (sheight/2) - (h_desc/2);
	return coord;
}