function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		_header_05_over = newImage("images/_header_05-over.gif");
		_header_07__header_05_over = newImage("images/_header_07-_header_05_over.gif");
		_header_09__header_05_over = newImage("images/_header_09-_header_05_over.gif");
		_header_10__header_23_over = newImage("images/_header_10-_header_23_over.gif");
		_header_13__header_15_over = newImage("images/_header_13-_header_15_over.gif");
		_header_14__header_15_over = newImage("images/_header_14-_header_15_over.gif");
		_header_14__header_17_over = newImage("images/_header_14-_header_17_over.gif");
		_header_14__header_19_over = newImage("images/_header_14-_header_19_over.gif");
		_header_14__header_21_over = newImage("images/_header_14-_header_21_over.gif");
		_header_14__header_23_over = newImage("images/_header_14-_header_23_over.gif");
		_header_15_over = newImage("images/_header_15-over.gif");
		_header_16__header_15_over = newImage("images/_header_16-_header_15_over.gif");
		_header_16__header_17_over = newImage("images/_header_16-_header_17_over.gif");
		_header_17_over = newImage("images/_header_17-over.gif");
		_header_18__header_17_over = newImage("images/_header_18-_header_17_over.gif");
		_header_18__header_19_over = newImage("images/_header_18-_header_19_over.gif");
		_header_19_over = newImage("images/_header_19-over.gif");
		_header_20__header_19_over = newImage("images/_header_20-_header_19_over.gif");
		_header_20__header_21_over = newImage("images/_header_20-_header_21_over.gif");
		_header_21_over = newImage("images/_header_21-over.gif");
		_header_22__header_21_over = newImage("images/_header_22-_header_21_over.gif");
		_header_22__header_23_over = newImage("images/_header_22-_header_23_over.gif");
		_header_23_over = newImage("images/_header_23-over.gif");
		_header_24__header_23_over = newImage("images/_header_24-_header_23_over.gif");
		_header_25__header_15_over = newImage("images/_header_25-_header_15_over.gif");
		_header_26__header_17_over = newImage("images/_header_26-_header_17_over.gif");
		_header_27__header_19_over = newImage("images/_header_27-_header_19_over.gif");
		_header_28__header_21_over = newImage("images/_header_28-_header_21_over.gif");
		_header_29__header_23_over = newImage("images/_header_29-_header_23_over.gif");
		preloadFlag = true;
	}
}



var imagenumber = 5;
var randomnumber = Math.random() ;
var randNum = Math.round( (imagenumber-1) * randomnumber) + 1 ;
mainimages = new Array
mainimages[1] = "_mainimage2.gif"
mainimages[2] = "_mainimage3.gif"
mainimages[3] = "_mainimage4.gif"
mainimages[4] = "_mainimage5.gif"
mainimages[5] = "_mainimage6.gif"
var mainimage = mainimages[randNum]