/*

  nav-flyout.js

  Author: Chad Lindstrom <webmaster[AT]chadlindstrom[DOT]ca>

*/



/* BEGIN: Utils Section */

var utils = {

	debug : 0,

	debugObj : null,

	getObj : function (items,c) {

	   var _s = items.length;

	   if( _s > 0 ){

		  for( var i = 0; i < _s; i++ ){

			 if( items[i].className == c ){

				return items[i];

			 }

		  }

	   }

	   this.trace("didn't find");

	   return null;

	},

	trace : function(m){

		/*

		if( 1 == this.debug ) {

			if( null == this.debugObj ) {

				this.debugObj = document.getElementById("trace");

				this.debugObj.style.visibility = "visible";

			}

			this.debugObj.value += m + "\n";

		}

		*/

	}

}

/* END: Utils Section */



/* BEGIN: Main Nav */



var flyNav = {

	visibleFlyout : null,	/* current flyout element */

	activeItem : null, /* current fly nav item (item that triggers flyout) */

	timer : null,	/* timer used to auto-hide */

	itemActivatedClass : "flyoutActive", /* the class used to assign to the activeItem */

	itemDefaultClass : "", /* default class for item, used to reset */

	flyoutClass : "flyout", /* the class used for the element that is toggled on/off */

	

	/* shows the flyout associated with t */

	show : function(t) { 

		utils.trace("showing");

		if( this.timer != null ){

			clearTimeout( this.timer );

		}

		

		this.itemDefaultClass = t.className;

		var tmp_f = this._getFlyout(t);

		

		if( this.activeItem != null || this.visibleFlyout != null ){

			if( this.activeItem === t || this.visibleFlyout === tmp_f ){

				return; /* we're already showing what we need */

			} else {

				flyNav._hideFlyout();

			}

		}

		

		this.activeItem = t;

		this.visibleFlyout = tmp_f;

		

		if( this.visibleFlyout != null ){

			

			this.visibleFlyout.style.display = "block";

		} else {


			throw new Error("'this.visibleFlyout' is null when it should not be.");

		}

		

		if( this.activeItem != null ){

			this.activeItem.className = this.itemDefaultClass + " " + this.itemActivatedClass;

             this.activeItem.className ='hmainsselected';

		}

		this.hold();

	},

	

	

	/* helper function to get the child flyout menu */

	_getFlyout : function (t){

		

		utils.trace("get helper");

		return utils.getObj(t.parentNode.childNodes,this.flyoutClass);

	},

	

	/* this function holds the current flyout active */

	hold : function (){

		

		utils.trace("holding");

		if( this.timer != null ){

			clearTimeout( this.timer );

		}

	},

	

	/* this function hides the current flyout */

	hide : function(){

		

		utils.trace("hiding");

		if( this.visibleFlyout != null ){

			this.timer = setTimeout( "flyNav._hideFlyout();", 500 );

		}

	},

	

	/* helper function to hide the current flyout, static function */

	_hideFlyout : function (){

		

		utils.trace("hide helper");

		if( flyNav.activeItem != null ){

			//this.activeItem.className = this.itemDefaultClass

            this.activeItem.className = 'hmains';

			flyNav.activeItem = null;

		}

		if( flyNav.visibleFlyout != null ){

			flyNav.visibleFlyout.style.display = "none";

			flyNav.visibleFlyout = null;

		}

	}	

}

/* END: Main Nav */