// JavaScript Document

/* ####################### begins list of images to be used ####################### */
currentIndx=0;
MyImages=new Array();
MyImages[0]='img/labs/mac_studio.jpg';
MyImages[1]='img/labs/big_lab.jpg';
MyImages[2]='img/labs/small_lab.jpg';
Messages=new Array()
Messages[0]='1,000';
Messages[1]='700';
Messages[2]='500';
/* ####################### now we preload the images ####################### */
imagesPreloaded = new Array(3);
for (var i = 0; i < MyImages.length ; i++) 
{
	imagesPreloaded[i] = new Image(400,300);
	imagesPreloaded[i].src=MyImages[i];
}
/* ####################### we create the functions to go forward and go back ####################### */
rowImg = 2;
function Nexter(){
	if (currentIndx<imagesPreloaded.length-1) {
		currentIndx=currentIndx+1;
		document.theImage.src=imagesPreloaded[currentIndx].src;
		document.form1.text1.value=Messages[currentIndx];
	} else {
		currentIndx=0;
		document.theImage.src=imagesPreloaded[currentIndx].src;
		document.form1.text1.value=Messages[currentIndx];
	}
	document.getElementById('pages').innerHTML = rowImg + "/" + MyImages.length;
	rowImg++;
	if(rowImg == MyImages.length + 1) {
		document.form1.bNext.disabled = true;	
	}
}
function Backer(){
	if (currentIndx>0) {
	currentIndx=currentIndx-1;
	document.theImage.src=imagesPreloaded[currentIndx].src;
	document.form1.text1.value=Messages[currentIndx];
	} else {
	currentIndx=3
	document.theImage.src=imagesPreloaded[currentIndx].src;
	document.form1.text1.value=Messages[currentIndx];
	}
}