function CategoryChange(select, thumbnail) {
	if (select.options[select.selectedIndex].value == 4 || select.options[select.selectedIndex].value == 104 || select.options[select.selectedIndex].value == 304 || select.options[select.selectedIndex].value == 504) {
		thumbnail.disabled = true;
	    document.getElementById('filemore').disabled = true;
	} else {
		thumbnail.disabled = false;
	    document.getElementById('filemore').disabled = false;
	}
}

function handleRatingMouseOver(whichImage) {
	var button_index = whichImage.substring(whichImage.length - 1);
	var base = whichImage.substring(0, whichImage.length - 1);
	var onImage = "http://www.soundspectrum.com/extras/images/green_button.gif";
	var offImage = "http://www.soundspectrum.com/extras/images/gray_button.gif";

	if (document.images) {
		for(i = 1; i <= button_index; i++) {
			new_image = base + i;
			document.images[new_image].src = onImage;
		}
		button_index++;
		for(i = button_index; i <= 5; i++) {
			new_image = base + i;
			document.images[new_image].src = offImage;
		}
	}
}


function handleRatingMouseOut(whichImage)
{
	var new_image;
	var half = parseInt(whichImage.substring(whichImage.length - 1));
	var base = whichImage.substring(0, whichImage.length - 2);
	var stars = parseInt(base.substring(base.length - 1));
	var button_index = stars;
	base = base.substring(0, base.length - 1);
	var onImage = "http://www.soundspectrum.com/extras/images/green_button.gif";
	var offImage = "http://www.soundspectrum.com/extras/images/gray_button.gif";
	var halfImage = "http://www.soundspectrum.com/extras/images/green_button_half.gif";

	if (document.images) {
		for(i = 1; i <= stars; i++) {
			new_image = base + i;
			document.images[new_image].src = onImage;
		}
		if (half) {
			button_index = stars + 1;
			new_image = base + button_index;
			document.images[new_image].src = halfImage;
		}
		button_index++;
		for(i = button_index; i <= 5; i++) {
			new_image = base + i;
			document.images[new_image].src = offImage;
		}
	}
}