var imageLength = imageArray.length, tempImage;
var name1, file1;
var folderName = "images_menu/"
var imageType = ".gif"

function loadImages() {
	if (document.images) {
		for (var i = 0; i<= imageLength-1; i++)  {
			tempImage=new Image(115, 76); tempImage.src = folderName+imageArray[i]+imageType;
			//alert("loaded image: " + tempImage.src)
		}
	}
}

function imageOn(nameImage1, fileImage1) {
	if (document.images) { 
		//name1=nameImage1; file1=fileImage1;
		document[nameImage1].src = folderName+fileImage1+"_on"+imageType;
	}
}

function imageOff(name1, file1) {
	if (document.images) { 
		document[name1].src = folderName+file1+"_off"+imageType;
	}
}