// JavaScript Document


$(document).ready(function(){ 
	
	var fadetime = 200;
   $("#itemdisplay_button").click(function(){
   			
			$("#itemdisplay_tint").css("opacity", "0");
			$("#itemdisplay_tint").css("filter", "alpha(opacity=0)");
			$("#itemdisplay_tint").css("display", "block");
			opacity('itemdisplay_tint', 0, 60, fadetime);
			
			$("#itemdisplay_wrapper").css("opacity", "0");
			$("#itemdisplay_wrapper").css("filter", "alpha(opacity=0)");
			$("#itemdisplay_wrapper").css("display", "block");
			opacity('itemdisplay_wrapper', 0, 100, fadetime);
	});
   
    $("#itemhide_button").click(function(){
		opacity('itemdisplay_tint', 60, 0, fadetime);
		opacity('itemdisplay_wrapper', 100, 0, fadetime);
	});
 
 });

//function setTimeout("document.all['table1'].style.filter=alpha(opacity=20)",2000)

function opacity(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
		setTimeout("setToInvisible('"+ id + "')",(timer * speed));
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

function setToInvisible(id){
	document.getElementById(id).style.opacity = 0;
	document.getElementById(id).style.filter = 'alpha(opacity=0)';
	document.getElementById(id).style.display = 'none';
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 100) {
		opacity(id, 100, 0, millisec);
	} else {
		opacity(id, 0, 100, millisec);
	}
}