function popup(mypage, myname, w, h, scroll, centered) {
	if(centered == 1){
		var winl = (screen.width - w) / 2;
		var wint = (screen.height - h) / 2;
		centerstr = ',top='+wint+',left='+winl;
	}else{
		centerstr = '';
	}
	winprops = 'height='+h+',width='+w + centerstr +',scrollbars='+scroll+',resizable=no';
	win = window.open(mypage, myname, winprops);
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}

moveThumbDiv = function(addVal) {
	var objDiv = document.getElementById("thumbDiv");
	objDiv.scrollTop = objDiv.scrollTop + addVal;
	stepInterval = window.setTimeout('moveThumbDiv('+addVal+')', 20);
}

function startMoveThumbDiv(addVal){
	stepInterval = window.setTimeout('moveThumbDiv('+addVal+')', 20);
}

function stopMoveThumbDiv(){
	clearInterval(stepInterval);
}

imgArr = new Array;
currImg = 1;
function setImage(imageId){
	 document.getElementById('slideImage').src = imgArr[imageId];
	 currImg = imageId;
}

function prevImg(){
	if(currImg > 1){
		currImg -= 1;
		document.getElementById('slideImage').src = imgArr[currImg];
	}
}

function nextImg(){
	
	if(currImg < imgCount){
		currImg += 1;
		document.getElementById('slideImage').src = imgArr[currImg];
	}
}