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_06_over = newImage("themes/uudenmaanherkku_uusi/images/header_06-over.jpg");
			header_08_over = newImage("themes/uudenmaanherkku_uusi/images/header_08-over.jpg");
			header_09_over = newImage("themes/uudenmaanherkku_uusi/images/header_09-over.jpg");
			header_10_over = newImage("themes/uudenmaanherkku_uusi/images/header_10-over.jpg");
			header_11_over = newImage("themes/uudenmaanherkku_uusi/images/header_11-over.jpg");
			preloadFlag = true;
		}
	}
		
	function empty_field()
	{
		if (document.haku.keywords.value == ' Tuotehaku')
		{
			document.haku.keywords.value = '';
		}
	
	}