var JBC =
{
	showCalc:function(szURL)
	{
		var intTop = (screen.availHeight - 480) / 2;
		var intLeft = (screen.availWidth - 640) / 2;
		window.open(szURL, "Calc", "toolbar=no, top=" + intTop + ", left=" + intLeft + ", location=no, directories=no, menubar=no, status=no, scrollbars=yes, resizable=1, width=730, height=400");
	},

	randomImage:function(range)
	{
		var images = new Array();

		images[0] = "/wp-content/themes/M2/images/banner-sub1.jpg";
		images[1] = "/wp-content/themes/M2/images/banner-sub2.jpg";
		images[2] = "/wp-content/themes/M2/images/banner-sub3.jpg";
		images[3] = "/wp-content/themes/M2/images/banner-sub4.jpg";

		var j = 0
		var p = images.length;
		var preBuffer = new Array()
		for (i = 0; i < p; i++){
		   preBuffer[i] = new Image()
		   preBuffer[i].src = images[i]
		}
		var whichImage = Math.round(Math.random()*(p-1));

		return '<img src="' + images[whichImage] + '" class="floatleft" />';
	}
}