function SlidingMenu(id, dir, left, top, width, height) {
      this.ie = document.all ? 1 : 0;
      this.ns4 = document.layers ? 1 : 0;
      this.dom = document.getElementById ? 1 : 0;
      if (this.ie || this.ns4 || this.dom) {
	this.id = id;
	this.dir = dir;
	this.orientation = dir == "left" || dir == "right" ? "h" : "v";
	this.dirType = dir == "right" || dir == "down" ? "-" : "+";
	this.dim = this.orientation == "h" ? width : height;
	this.hideTimer = false;
	this.aniTimer = false;
	this.open = false;
	this.over = false;
	this.startTime = 0;
	this.gRef = "SlidingMenu_"+id;
	eval(this.gRef+"=this");
	SlidingMenu.Registry[id] = this;
	var d = document;
	d.write('<style type="text/css">');
	d.write('#' + this.id + 'Container { visibility:hidden; ');
	d.write('left:' + left + 'px; ');
	d.write('top:' + top + 'px; ');
	d.write('overflow:hidden; }');
	d.write('#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; ');
	d.write('width:' + width + 'px; ');
	d.write('height:' + height + 'px; ');
	d.write('clip:rect(0 ' + width + ' ' + height + ' 0); ');
	d.write('}');
	d.write('</style>');
	this.load();
      }
}
SlidingMenu.prototype.load = function() {
      var d = document;
      var lyrId1 = this.id + "Container";
      var lyrId2 = this.id + "Content";
      var obj1 = this.dom ? d.getElementById(lyrId1) : this.ie ? d.all[lyrId1] : d.layers[lyrId1];
      if (obj1) 
	var obj2 = this.ns4 ? obj1.layers[lyrId2] : this.ie ? d.all[lyrId2] : d.getElementById(lyrId2);
      var temp;
      if (!obj1 || !obj2) 
	window.setTimeout(this.gRef + ".load()", 100);
      else {
	this.container = obj1;
	this.menu = obj2;
	this.style = this.ns4 ? this.menu : this.menu.style;
	this.homePos = eval("0" + this.dirType + this.dim);
	this.outPos = 0;
	this.accelConst = (this.outPos - this.homePos) / SlidingMenu.aniLen / SlidingMenu.aniLen ;
	if (this.ns4) 
	     this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
	this.menu.onmouseover = new Function("SlidingMenu.showMenu('" + this.id + "')");
	this.menu.onmouseout = new Function("SlidingMenu.hideMenu('" + this.id + "')");
	this.endSlide();
      };
}
SlidingMenu.showMenu = function(id) {
      window.status = id;
      var reg = SlidingMenu.Registry;
      var obj = SlidingMenu.Registry[id];
      if (obj.container) {
      obj.over = true;
      for (menu in reg) 
         	if (id != menu)
	      SlidingMenu.hide(menu);
      if (obj.hideTimer) { 
	reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer);
      }
      if (!obj.open && !obj.aniTimer) 
	reg[id].startSlide(true);
      }
};
SlidingMenu.hideMenu = function(id) {
      var obj = SlidingMenu.Registry[id];
      if (obj.container) {
   	if (obj.hideTimer) 
	      window.clearTimeout(obj.hideTimer);
            obj.hideTimer = window.setTimeout("SlidingMenu.hide('" + id + "')", SlidingMenu.hideDelay);
      }
};
SlidingMenu.hide = function(id) {
      var obj = SlidingMenu.Registry[id];
      obj.over = false;
      if (obj.hideTimer) 
	window.clearTimeout(obj.hideTimer);
      obj.hideTimer = 0;
      if (obj.open && !obj.aniTimer) 
	obj.startSlide(false);
};
SlidingMenu.prototype.startSlide = function(open) {
      this.open = open;
      if (open) 
	this.setVisibility(true);
      this.startTime = (new Date()).getTime();
      this.aniTimer = window.setInterval(this.gRef + ".slide()", SlidingMenu.minCPUResolution);
};
SlidingMenu.prototype.slide = function() {
      var elapsed = (new Date()).getTime() - this.startTime;
      if (elapsed > SlidingMenu.aniLen) 
      	this.endSlide();
      else {
      	var d = Math.round(Math.pow(SlidingMenu.aniLen-elapsed, 2) * this.accelConst);
      	if (this.open && this.dirType == "-") 
	      d = -d;
	else if (this.open && this.dirType == "+") 
	      d = -d;
      	else if (!this.open && this.dirType == "-") 
	      d = -this.dim + d;
      	else 
	      d = this.dim + d;
             this.moveTo(d);
      }
};
SlidingMenu.prototype.endSlide = function() {
      this.aniTimer = window.clearTimeout(this.aniTimer);
      this.moveTo(this.open ? this.outPos : this.homePos);
      if (!this.open) 
	this.setVisibility(false);
      if ((this.open && !this.over) || (!this.open && this.over)) {
	this.startSlide(this.over);
      }
};
SlidingMenu.prototype.setVisibility = function(bShow) { 
      var s = this.ns4 ? this.container : this.container.style;
      s.visibility = bShow ? "visible" : "hidden";
};
SlidingMenu.prototype.moveTo = function(p) { 
      this.style[this.orientation == "h" ? "left" : "top"] = p;
};
SlidingMenu.prototype.getPos = function(c) {
      return parseInt(this.style[c]);
};

SlidingMenu.Registry = [];
SlidingMenu.aniLen = 450;
SlidingMenu.hideDelay = 600;
SlidingMenu.minCPUResolution = 10;


new SlidingMenu("mnuServices", "down", 291, 131, 171, 94);
new SlidingMenu("mnuCompany", "down", 366, 131, 90, 94);
new SlidingMenu("mnuGovernment", "down", 448, 131, 158, 120);
new SlidingMenu("mnuCareers", "down", 592, 131, 168, 131);