var scalePhotos, demoSlider, maxHeight;

function createCookie(name,value,days)
{
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name)
{
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name)
{
	createCookie(name,"",-1);
}

function scaleIt(v)
{
	floorSize = .45;
	
	ceilingSize = 1.0;
	
	v = floorSize + (v * (ceilingSize - floorSize));
	
	for (i = 0; i < scalePhotosBasic.length; i++) {
		
		imgIdBasic = scalePhotosBasic[i].id;
						
		scalePhotosBasic[i].style.width = (v * imgIdBasic) + 'px';
								
		scalePhotosBasic[i].style.width = (v * imgIdBasic) + 'px';
		
		if (typeof maxHeight == "undefined" || scalePhotosBasic[i].firstChild.height > maxHeight.firstChild.height) {
		
			maxHeight = scalePhotosBasic[i];
			
		}
				
		scalePhotosBasic[i].style.height = (v * 190) + 'px';
		
		scaleContainerBasic[i].style.height = (v * 240) + 30 + 'px';
		scaleContainerBasic[i].style.width = (v * 240)  + 'px';
		
		if (scaleContainerBasic[i].style.display == "none")
		{
		var loadingdiv = document.getElementById('loading');
		loadingdiv.style.display = "none";
		scaleContainerBasic[i].style.display = "inline"
		}
		
	}

	for (i = 0; i < scalePhotosAdvanced.length; i++) {
				
		imgIdAdvanced = scalePhotosAdvanced[i].id;
						
		scalePhotosAdvanced[i].style.width = (v * imgIdAdvanced) + 'px';
				
		if (typeof maxHeight == "undefined" || scalePhotosAdvanced[i].firstChild.height > maxHeight.firstChild.height) {
		
			maxHeight = scalePhotosAdvanced[i];
			
		}
		
		scalePhotosAdvanced[i].style.height = (v * 190) + 'px';
		
		scaleContainerAdvanced[i].style.height = (v * 240) + 100 + 'px';
		scaleContainerAdvanced[i].style.width = (v * 240)  + 80 + 'px';
		
		if (scaleContainerAdvanced[i].style.display == "none")
		{
		var loadingdiv = document.getElementById('loading');
		loadingdiv.style.display = "none";
		scaleContainerAdvanced[i].style.display = "inline"
		}
		
	}

}


function loader()
{
	var thumbCookie = readCookie('psg_thumbsize');
	
	demoSlider = new Control.Slider('slider-handle', 'slider-bar', { axis:'horizontal', minimum: 0, maximum: 200, alignX: -5, increment: 2, sliderValue: thumbCookie });
	
	demoSlider.options.onSlide = function(value) {
		scaleIt(value);
	}
	
	demoSlider.options.onChange = function(value) {
		scaleIt(value);
		document.cookie = 'psg_thumbsize=' + value + '; expires=Fri, 4 Jan 2013 20:47:11 UTC; path=/';
	}
		
	scalePhotosBasic = document.getElementsByClassName('scale-image-basic');
	scaleContainerBasic = document.getElementsByClassName('img-container-basic');
	
	scalePhotosAdvanced = document.getElementsByClassName('scale-image-advanced');
	scaleContainerAdvanced = document.getElementsByClassName('img-container-advanced');
	
	if (thumbCookie != null) {
	
		scaleIt(thumbCookie);
	
	} else {
	
		scaleIt(demoSlider.options.sliderValue);
	
	}
	
	if (thumbCookie != "") {
	
		scaleIt(thumbCookie);
		demoSlider.options.sliderValue = thumbCookie;
		
	} else {
		
		scaleIt(demoSlider.options.sliderValue);
	
	}
}