function thumbOn(thumbEntry){
	document.getElementById("thumb"+thumbEntry).onmouseover = function(){
		document.getElementById("bigImage").src = items[thumbEntry];
		document.getElementById("titleCaption").innerHTML = this.title;
	};
	
     // create object
     imageObj = new Image();
	 imageObj.src=items[thumbEntry];
}

function init(){
	var i=0;
	for (i=0;i<items.length;i++){
		thumbOn( i );		
	}
	document.getElementById("bigImage").src = items[0];
}

window.onload = init;