var preLoadImg = new Object();

function initRollOvers(){
	$("img.rollover").each(function(){
		var imgSrc = this.src;
		var sep = imgSrc.lastIndexOf('.');
		var onSrc = imgSrc.substr(0, sep) + '_on' + imgSrc.substr(sep, 4);
		preLoadImg[imgSrc] = new Image();
		preLoadImg[imgSrc].src = onSrc;
		$(this).hover(
			function() { this.src = onSrc; },
			function() { this.src = imgSrc; }
		);
	});
}

$(function() {
	$ThumnailSize = 180;
	$ThumnailMaxSize = 300;
	$ThumnailMinSize = 100;

	$('#thumnailBlock')
		.mousewheel(function(event, delta) {
			$ThumnailSize += delta*5;
			if ($ThumnailSize < $ThumnailMinSize) {
				$ThumnailSize = $ThumnailMinSize;
			} else if ($ThumnailSize > $ThumnailMaxSize) {
				$ThumnailSize = $ThumnailMaxSize;
			}

			$('.thumnail').css("width",$ThumnailSize+"px");
			$('.thumnail').css("height",$ThumnailSize+"px");

			return false;
	});

	$('.popup').click(function(){
		this.target = "_blank";
	});

	initRollOvers();

});