var startPos=0;
var endPos=0;
var windowSize = 6;

function moveWindow(arrayLabel) {
	endPos = arrayLabel.length;
	if(windowSize > arrayLabel.length){
		windowSize = arrayLabel.length;
	}

	var labelToView = new Array(windowSize);
	if(startPos < 0)
		startPos = 0;
	for(i=0; i<windowSize; i++) {
		if(arrayLabel[i+startPos] != null && arrayLabel[i+startPos] != 'undefined' ){
			labelToView[i]=arrayLabel[i+startPos];
		}
	}

	var s = "";
	for(l=0; l<labelToView.length; l++) {
		s += labelToView[l]
		s += '&nbsp;&nbsp;'
	}

	document.getElementById("test").innerHTML=s;
}

function setUpWindow(array) {
	moveWindow(array);
}

function upWindow(array) {
	startPos++;
	if (startPos > (endPos - windowSize)) {
		startPos = endPos - windowSize
	} else {
		moveWindow(array);
	}
}

function downWindow(array) {
	startPos--;
	if (startPos < 0) {
		startPos = 0;
	}
	moveWindow(array);
}