function popup(url)
{
	window.open(url, 'ChangeCaption', 'height=200,width=600');
}

function toggle(element)
{

	if(document.getElementById(element).style.display=="none")
		{
			createCookie(element,"active", 0);
		}
	else
		{
			eraseCookie(element);
		}
  document.getElementById(element).style.display=
    (document.getElementById(element).style.display=="block")
        ?"none":"block";
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}

function scale_up(size)
  {
    width = parseInt(document["john316"].style.width);
    height = parseInt(document["john316"].style.height);

		ratio = height / width;
		height_size = size * ratio;

		str_width = width + size + '';
		str_height = height + height_size + ''

    document["john316"].style.width = str_width;
    document["john316"].style.height = str_height;


  }
function scale_down(size)
  {

    width = parseInt(document["john316"].style.width);
    height = parseInt(document["john316"].style.height);

    ratio = height / width;
    height_size = size * ratio;

		if (width > size && height > height_size)
			{

		    str_width = width - size + '';
		    str_height = height - height_size + ''

		    document["john316"].style.width = str_width;
		    document["john316"].style.height = str_height;
			}
  }