$(function(){
		   
		   $('#conceptBtn').hover(function(){
					$(this).css({'cursor':'pointer'});
			});

			$('#conceptBtn').click(function(){
			$("#imagebox").load("conceptimage.html", function() {

				

				
			$('#wrapper').before('<div class="expository"></div>');
				
				var arrPageSizes = getPageSize();
				var arrPageScroll = getPageScroll();
				
				$('.expository').css({
					opacity:0.6,
					width:arrPageSizes[0] ,
					height:arrPageSizes[1]
					}).fadeIn();
					
					$(this).show();
					
				$('.substance').css({
					width:890,
					height:630,
					overflow:"hidden",
					top:arrPageScroll[1] + (arrPageSizes[0] / 16),
					left:(arrPageSizes[0] - 890) /2
					});
					
				$('#box').css({
					width:890,
					height:630
				});

				$('.expository').click(function() {
					closeExpository();
					return false;
				});

			});	
				
				return false;
			});
		   	
   

			$(window).resize(function() {
			
			var arrPageSizes = getPageSize();	
			$('.expository').css({
					width:arrPageSizes[0],
					height:arrPageSizes[1]
				});

				var arrPageScroll = getPageScroll();

				$('.substance').css({
					top:arrPageScroll[1] + (arrPageSizes[0] / 20),
					left:(arrPageSizes[0] - 890) /2
				});
			});
		   
});

function getPageSize() {
			var xScroll, yScroll;
			if (window.innerHeight && window.scrollMaxY) {	
				xScroll = window.innerWidth + window.scrollMaxX;
				yScroll = window.innerHeight + window.scrollMaxY;
			} else if (document.body.scrollHeight > document.body.offsetHeight){ 
				xScroll = document.body.scrollWidth;
				yScroll = document.body.scrollHeight;
			} else { 
				xScroll = document.body.offsetWidth;
				yScroll = document.body.offsetHeight;
			}
			var windowWidth, windowHeight;
			if (self.innerHeight) {
				if(document.documentElement.clientWidth){
					windowWidth = document.documentElement.clientWidth; 
				} else {
					windowWidth = self.innerWidth;
				}
				windowHeight = self.innerHeight;
			} else if (document.documentElement && document.documentElement.clientHeight) { 
				windowWidth = document.documentElement.clientWidth;
				windowHeight = document.documentElement.clientHeight;
			} else if (document.body) { 
				windowWidth = document.body.clientWidth;
				windowHeight = document.body.clientHeight;
			}	
			if(yScroll < windowHeight){
				pageHeight = windowHeight;
			} else { 
				pageHeight = yScroll;
			}
			if(xScroll < windowWidth){	
				pageWidth = xScroll;		
			} else {
				pageWidth = windowWidth;
			}
			arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight);
			return arrayPageSize;
};
function getPageScroll() {
			var xScroll, yScroll;
			if (self.pageYOffset) {
				yScroll = self.pageYOffset;
				xScroll = self.pageXOffset;
			} else if (document.documentElement && document.documentElement.scrollTop) {	
				yScroll = document.documentElement.scrollTop;
				xScroll = document.documentElement.scrollLeft;
			} else if (document.body) {
				yScroll = document.body.scrollTop;
				xScroll = document.body.scrollLeft;	
			}
			arrayPageScroll = new Array(xScroll,yScroll);
			return arrayPageScroll;
};
function closeExpository() {
			$('.expository').remove();
			$('.substance').fadeOut(function() { $('.expository').remove(); });
}