// JavaScript Document
var timerlen = 5;
var slideAniLen = 250;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function initialslide() {
	var vars = getRequestVars();
	if (vars['s'] && vars['s'].length) {
		slidedown(vars['s']);
		setTimeout(function() { sethash(vars['s']); }, 500)
	}
	
	return true;
}

function sethash(name) {
	if (moving[name]) {
		setTimeout(function() { sethash(name); }, 500)
	} else {
		window.location.href = '#' + name;
	}
}

function slidedown(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display != "none")
                return; // cannot slide down something that is already visible

        moving[objname] = true;
        dir[objname] = "down";
        startslide(objname);
}

function slideup(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display == "none")
                return; // cannot slide up something that is already hidden

        moving[objname] = true;
        dir[objname] = "up";
        startslide(objname);
}

function startslide(objname){
        obj[objname] = document.getElementById(objname);

        endHeight[objname] = parseInt(obj[objname].style.height);
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
                obj[objname].style.height = "1px";
        }

        obj[objname].style.display = "block";

        timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}

function slidetick(objname){
        var elapsed = (new Date()).getTime() - startTime[objname];

        if (elapsed > slideAniLen)
                endSlide(objname)
        else {
                var d =Math.round(elapsed / slideAniLen * endHeight[objname]);
                if(dir[objname] == "up")
                        d = endHeight[objname] - d;

                obj[objname].style.height = d + "px";
        }

        return;
}

function endSlide(objname){
        clearInterval(timerID[objname]);

        if(dir[objname] == "up")
                obj[objname].style.display = "none";

        obj[objname].style.height = endHeight[objname] + "px";

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}

function toggleSlide(objname){
  if(document.getElementById(objname).style.display == "none"){
    // div is hidden, so let's slide down
    slidedown(objname);
  }else{
    // div is not hidden, so slide up
    slideup(objname);
  }
}

function getRequestVars() {
// Build an empty URL structure in which we will store
 // the individual query values by key.
 var objURL = new Object();
  
  
 // Use the String::replace method to iterate over each
 // name-value pair in the query string. Location.search
 // gives us the query string (if it exists).
 window.location.search.replace(
 new RegExp( "([^?=&]+)(=([^&]*))?", "g" ),
  
 // For each matched query string pair, add that
 // pair to the URL struct using the pre-equals
 // value as the key.
 function( $0, $1, $2, $3 ){
 objURL[ $1 ] = $3;
 }
 );
 return objURL;
}