function changeImg1(imgNumber)
{
	var imgOver = document.images[imgNumber];
	var newImgNumber = Math.round(Math.random() * [myImage1.length -1]);
	while (imgOver.src.indexOf(myImage1[newImgNumber]) != -1)
	{
		newImgNumber = Math.round(Math.random() * [myImage1.length -1]);
	}
	imgOver.src = myImage1[newImgNumber];
	return false;
}
function changeImg2(imgNumber)
{
	var imgOver = document.images[imgNumber];
	var newImgNumber = Math.round(Math.random() * [myImage2.length -1]);
	while (imgOver.src.indexOf(myImage2[newImgNumber]) != -1)
	{
		newImgNumber = Math.round(Math.random() * [myImage2.length -1]);
	}
	imgOver.src = myImage2[newImgNumber];
	return false;
}
function changeImg3(imgNumber)
{
	var imgOver = document.images[imgNumber];
	var newImgNumber = Math.round(Math.random() * [myImage3.length -1]);
	while (imgOver.src.indexOf(myImage3[newImgNumber]) != -1)
	{
		newImgNumber = Math.round(Math.random() * [myImage3.length -1]);
	}
	imgOver.src = myImage3[newImgNumber];
	return false;
}