var CurrentMenu;
var CurrentId;
var CurrentClass;

var ColourArrays=new Array();
ColourArrays['SewerOff']='#004059';
ColourArrays['WaterQualityOff']='#0077D5';
ColourArrays['BridgesOff']='#B3C890';
ColourArrays['EarthOff']='#836E2D';
ColourArrays['ErosionOff']='#B3BCC1';
ColourArrays['IrrigationOff']='#423B67';
ColourArrays['PolePilesOff']='#9F2E20';
ColourArrays['ColumnsOff']='#6C4921';
ColourArrays['SleepersOff']='#D49200';

var MenuArrays=new Array();
MenuArrays['Sewer']='#004059';
MenuArrays['WaterQuality']='#004059';
MenuArrays['Bridges']='#B3C890';
MenuArrays['Earth']='#836E2D';
MenuArrays['Erosion']='#B3BCC1';
MenuArrays['Irrigation']='#423B67';
MenuArrays['Poles']='#9F2E20';
MenuArrays['Piles']='#9F2E20';
MenuArrays['Columns']='#6C4921';
MenuArrays['Sleepers']='#D49200';

function getParams() {
var idx = parent.location.href.indexOf('?');
var params = new Array();
if (idx != -1) {
var pairs = parent.location.href.substring(idx+1, parent.location.href.length).split('&');
for (var i=0; i<pairs.length; i++) {
nameVal = pairs[i].split('=');
params[nameVal[0]] = nameVal[1];
   }
}
return params;
}
params = getParams();
requested = unescape(params['ProductCategory']);

function SDMenu(id) {
	if (!document.getElementById || !document.getElementsByTagName)
		return false;
	this.menu = document.getElementById(id);
	this.submenus = this.menu.getElementsByTagName("div");
	this.remember = true;
	this.speed = 3;
	this.markCurrent = true;
	this.oneSmOnly = true;
}
SDMenu.prototype.init = function() {
	var mainInstance = this;
	for (var i = 0; i < this.submenus.length; i++)
		this.submenus[i].getElementsByTagName("span")[0].onclick = function() {
			mainInstance.toggleMenu(this.parentNode);
			
		};
	if (this.markCurrent) {
		var links = this.menu.getElementsByTagName("a");
		var OptionSewerLinks=new Array(39,40,41,42);
		if(requested=="Sewer"){
			var LastClass=links[9].className;
			this.TurnOnMenu()
			ReplaceClass=LastClass.replace(/rollover/g, "Active");
			this.menu.getElementsByTagName('a').item(9).className=ReplaceClass;
		}
		else if(requested=="Chemical"){
			var LastClass=links[10].className;
			this.TurnOnMenu()
			ReplaceClass=LastClass.replace(/rollover/g, "Active");
			this.menu.getElementsByTagName('a').item(10).className=ReplaceClass;
		}
		else if(requested=="Irrigation"){
			document.getElementById(requested).style.backgroundColor='#423B67';
			return false;
		}
		else if(requested=="Columns"){
			document.getElementById(requested).style.backgroundColor='#6C4921';
			return false;
		}
		else if(requested=="Sleepers"){
			document.getElementById(requested).style.backgroundColor='#D49200';
			return false;
		}else{
		for (var i = 0; i < links.length; i++)
			if (links[i].href == document.location.href) {
				var LastClass=links[i].className;
				this.TurnOnMenu()
				ReplaceClass=LastClass.replace(/rollover/g, "Active");
				this.menu.getElementsByTagName('a').item(i).className=ReplaceClass;
				break;
			}
		}
	}
	if ((this.remember)&&(CurrentMenu)) {
		var regex = new RegExp("sdmenu_" + encodeURIComponent(this.menu.id) + "=([01]+)");
		var match = regex.exec(document.cookie);
		if (match) {
			var states = match[1].split("");
			for (var i = 0; i < states.length; i++)
				this.submenus[i].className = (states[i] == 0 ? "collapsed" : "");
		}
	}
};
SDMenu.prototype.TurnOnMenu = function(submenu) {
		var regex = new RegExp("sdmenu_" + encodeURIComponent(this.menu.id) + "=([01]+)");
		var match = regex.exec(document.cookie);
		var states = match[1].split("");
		for (var i = 0; i < states.length; i++){
			if (states[i]==1) {
				var CurrentClassNum=i;
				break;
			}
		}
	CurrentId=this.menu.getElementsByTagName("span").item(CurrentClassNum).id;
	//alert(CurrentClassNum)
	if((CurrentId)&&(CurrentId!="Stormwater")){
		document.getElementById(CurrentId).style.backgroundColor=MenuArrays[CurrentId];
	}
	else if((CurrentId)&&(CurrentId=="Stormwater")){
		document.getElementById(CurrentId).style.backgroundImage="url(images/NewButtons/StormwaterOn.png)";
	}
}
SDMenu.prototype.toggleMenu = function(submenu) {
	if (submenu.className == "collapsed")
		this.expandMenu(submenu);
	else
		this.collapseMenu(submenu);
};
SDMenu.prototype.expandMenu = function(submenu) {
	if((CurrentId)&&(CurrentId!="Stormwater")){
		document.getElementById(CurrentId).style.backgroundColor="";
	}
	else if((CurrentId)&&(CurrentId=="Stormwater")){
		document.getElementById(CurrentId).style.backgroundImage="";
	}
	var fullHeight = submenu.getElementsByTagName("span")[0].offsetHeight;
	CurrentClass = submenu.getElementsByTagName("span")[0].className;
	CurrentId = submenu.getElementsByTagName("span")[0].id
	if(CurrentClass=="StormwaterOff"){
		submenu.getElementsByTagName("span")[0].style.backgroundImage="url(images/NewButtons/StormwaterOn.png)";
	}else{
		submenu.getElementsByTagName("span")[0].style.backgroundColor=ColourArrays[CurrentClass];
	}
	var links = submenu.getElementsByTagName("a");
	for (var i = 0; i < links.length; i++)
		fullHeight += links[i].offsetHeight;
	var moveBy = Math.round(this.speed * links.length);
	
	var mainInstance = this;
	var intId = setInterval(function() {
		var curHeight = submenu.offsetHeight;
		var newHeight = curHeight + moveBy;
		if (newHeight < fullHeight)
			submenu.style.height = newHeight + "px";
		else {
			clearInterval(intId);
			submenu.style.height = "";
			submenu.className = "";
			mainInstance.memorize();
		}
	}, 30);
	this.collapseOthers(submenu);
};
SDMenu.prototype.collapseMenu = function(submenu) {
	var minHeight = submenu.getElementsByTagName("span")[0].offsetHeight;
	var moveBy = Math.round(this.speed * submenu.getElementsByTagName("a").length);
	var mainInstance = this;
	var intId = setInterval(function() {
		var curHeight = submenu.offsetHeight;
		var newHeight = curHeight - moveBy;
		if (newHeight > minHeight)
			submenu.style.height = newHeight + "px";
		else {
			clearInterval(intId);
			submenu.style.height = "";
			submenu.className = "collapsed";
			mainInstance.memorize();
		}
	}, 30);
};
SDMenu.prototype.collapseOthers = function(submenu) {
	if (this.oneSmOnly) {
		for (var i = 0; i < this.submenus.length; i++)
			if (this.submenus[i] != submenu && this.submenus[i].className != "collapsed")
				this.collapseMenu(this.submenus[i]);
	}
};
SDMenu.prototype.expandAll = function() {
	var oldOneSmOnly = this.oneSmOnly;
	this.oneSmOnly = false;
	for (var i = 0; i < this.submenus.length; i++)
		if (this.submenus[i].className == "collapsed")
			this.expandMenu(this.submenus[i]);
	this.oneSmOnly = oldOneSmOnly;
};
SDMenu.prototype.collapseAll = function() {
	for (var i = 0; i < this.submenus.length; i++)
		if (this.submenus[i].className != "collapsed")
			this.collapseMenu(this.submenus[i]);
};
SDMenu.prototype.memorize = function() {
	if (this.remember) {
		var states = new Array();
		for (var i = 0; i < this.submenus.length; i++)
			states.push(this.submenus[i].className == "collapsed" ? 0 : 1);
		var d = new Date();
		d.setTime(d.getTime() + (30 * 24 * 60 * 60 * 1000));
		document.cookie = "sdmenu_" + encodeURIComponent(this.menu.id) + "=" + states.join("") + "; expires=" + d.toGMTString() + "; path=/";
	}
};