var left_size = 200;
var animation_timeout = 1;
var animation_step = 5;
var $cookie = new cookie();

function hideSidePanel(s){
    var div_left = $get("div_left");
    var div_main = $get("div_main");
    if(s.id=="div_left_splitter"){
        hide(div_left, div_main);
    }
}
function hide(p1, p2){
    panel1 = p1;
    panel2 = p2;
    panel1_size = panel1.clientWidth;
    panel2_size = panel2.clientWidth;
    if(panel1_size>0){
        animatedHide();
    }else{
        animatedShow();
    }
}
function animatedHide(){
    if(panel1.clientWidth>0){
        panel1.style.width = (panel1.clientWidth-animation_step)+"px";
        //panel2.style.width = (panel2.clientWidth+animation_step)+"px";
        setTimeout(animatedHide, animation_timeout);
        RefreshLayout();
    }else{
        SaveLauout();
    }
}
function animatedShow(){
    if(panel1.clientWidth<left_size){
        panel1.style.width = (panel1.clientWidth+animation_step)+"px";
        //panel2.style.width = (panel2.clientWidth-animation_step)+"px";
        setTimeout(animatedShow, animation_timeout);
        RefreshLayout();
    }else{
        SaveLauout();
    }
}
function RefreshLayout(){
    var layoutDiv = $get('layoutDiv', document);
    var formDiv = $get('formDiv', document);
    if(layoutDiv){
        if(Sys.Browser.agent==Sys.Browser.InternetExplorer && Sys.Browser.version<7){
            layoutDiv.style.marginRight = "18px";
        }
    }
    if(formDiv){
        if(Sys.Browser.agent==Sys.Browser.InternetExplorer && Sys.Browser.version<7){
            formDiv.style.marginRight = "18px";
        }
    }
}
function SaveLauout(){
    $cookie.write('div_left', $get("div_left").clientWidth, 1);
}
function LoadSavedLayout(){
    var left_width = $cookie.read("div_left");
    if(left_width){$get("div_left").style.width = left_width + "px";}
    RefreshLayout();
}
function cookie(){
    this.read = function(key){
        var nameEQ = key + "=";
	    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;
    }
    this.write = function(key, value, days){
        var expires = "";
        if (days) {
		    var date = new Date();
		    date.setTime(date.getTime()+(days*24*60*60*1000));
		    expires = "; expires="+date.toGMTString();
	    }
	    document.cookie = key+"="+value+expires+"; path=/";
    }
    this.erase = function(key){
        this.write(key, "", -1);
    }
    return this;
}
//
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++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}
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 == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function currentOpac(id, opacEnd, millisec) {
	//standard opacity is 100
	var currentOpac = 100;
	
	//if the element has an opacity set, get it
	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}

	//call for the function that changes the opacity
	opacity(id, currentOpac, opacEnd, millisec)
}