var preloadDelayMS = 1500;
var imgArray;
function showImage(eId) {
	$('imageView').src = imageMap[eId];
}
function image_preload(){
	imgArray = new Array();
	var idx = 0;
	for( var key in imageMap){
		imgArray[idx] = new Image();
		imgArray[idx].src = imageMap[key];
		idx++;
	}
}