TextResizeDetector = function() { 
	var el  = null;
	var iIntervalDelay  = 200;
	var iInterval = null;
	var iCurrSize = -1;
	var iBase = -1;
 	var aListeners = [];
 	var createControlElement = function() {
	 	el = document.createElement('span');
		el.id='textResizeControl';
		el.innerHTML=' ';
		el.style.position="absolute";
		el.style.left="-9999px";
		var elC = document.getElementById(TextResizeDetector.TARGET_ELEMENT_ID);
		// insert before firstChild
		if (elC)
			elC.insertBefore(el,elC.firstChild);
		iBase = iCurrSize = TextResizeDetector.getSize();
 	};

 	function _stopDetector() {
		window.clearInterval(iInterval);
		iInterval=null;
	};
	function _startDetector() {
		if (!iInterval) {
			iInterval = window.setInterval('TextResizeDetector.detect()',iIntervalDelay);
		}
	};
 	
 	 function _detect() {
 		var iNewSize = TextResizeDetector.getSize();
 		if(iNewSize!== iCurrSize) {
			for (var 	i=0;i <aListeners.length;i++) {
				aListnr = aListeners[i];
				var oArgs = {  iBase: iBase,iDelta:((iCurrSize!=-1) ? iNewSize - iCurrSize + 'px' : "0px"),iSize:iCurrSize = iNewSize};
				if (!aListnr.obj) {
					aListnr.fn('textSizeChanged',[oArgs]);
				}
				else  {
					aListnr.fn.apply(aListnr.obj,['textSizeChanged',[oArgs]]);
				}
			}

 		}
 		return iCurrSize;
 	};
	var onAvailable = function() {
		
		if (!TextResizeDetector.onAvailableCount_i ) {
			TextResizeDetector.onAvailableCount_i =0;
		}

		if (document.getElementById(TextResizeDetector.TARGET_ELEMENT_ID)) {
			TextResizeDetector.init();
			if (TextResizeDetector.USER_INIT_FUNC){
				TextResizeDetector.USER_INIT_FUNC();
			}
			TextResizeDetector.onAvailableCount_i = null;
		}
		else {
			if (TextResizeDetector.onAvailableCount_i<600) {
	  	 	    TextResizeDetector.onAvailableCount_i++;
				setTimeout(onAvailable,200)
			}
		}
	};
	setTimeout(onAvailable,500);

 	return {
		 	/*
		 	 * Initializes the detector
		 	 * 
		 	 * @param {String} sId The id of the element in which to create the control element
		 	 */
		 	init: function() {
		 		
		 		createControlElement();		
				_startDetector();
 			},
			/**
			 * Adds listeners to the ontextsizechange event. 
			 * Returns the base font size
			 * 
			 */
 			addEventListener:function(fn,obj,bScope) {
				aListeners[aListeners.length] = {
					fn: fn,
					obj: obj
				}
				return iBase;
			},
			/**
			 * performs the detection and fires textSizeChanged event
			 * @return the current font size
			 * @type {integer}
			 */
 			detect:function() {
 				return _detect();
 			},
 			/**
 			 * Returns the height of the control element
 			 * 
			 * @return the current height of control element
			 * @type {integer}
 			 */
 			getSize:function() {
	 				var iSize;
			 		return el.offsetHeight;
		 		
		 		
 			},
 			/**
 			 * Stops the detector
 			 */
 			stopDetector:function() {
				return _stopDetector();
			},
			/*
			 * Starts the detector
			 */
 			startDetector:function() {
				return _startDetector();
			}
 	}
 }();

function init()  {
	var initialSize=TextResizeDetector.getSize();
	//alert("got here");
	if(initialSize > 15){
		//alert("The base font size = " + iBase);
				
		$(function() { 	
			$("#globalNav ul li ul").css("display","none");
		});
	}
   var iBase = TextResizeDetector.addEventListener(onFontResize,null);
	//alert("The base font size = " + iBase);
}
function onFontResize(e,args) {
	var msg = "\nThe base font size in pixels: " + args[0].iBase;
	msg +="\nThe current font size in pixels: " + args[0].iSize;
	msg += "\nThe change in pixels from the last size:" + args[0].iDelta;
	//alert(msg);
	
	$(function() { 	
		if($.browser.msie && $.browser.version <="7.0") 
		{//alert($('globalNav ul').width());
				if(args[0].iSize > 16){
								
						$("#globalNav ul li").hover(
							function() {					
								
								$(this).children('ul').css("display","none");
							},
							function() {
								$(this).children('ul').css("display","none");
						})
					
				}else{
				
						$("#globalNav ul li").hover(
							function() {						
								$(this).children('ul').css("display","block");
							},
							function() {
								$(this).children('ul').css("display","none");
							})
				
				}
		}
		else
		{
				if(args[0].iSize > 15){
								
						$("#globalNav ul li").hover(
							function() {					
								
								$(this).children('ul').css("display","none");
							},
							function() {
								$(this).children('ul').css("display","none");
						})
				
				}else{
				
						$("#globalNav ul li").hover(
							function() {						
								$(this).children('ul').css("display","block");
							},
							function() {
								$(this).children('ul').css("display","none");
							})
					
				}
		}
	});
	

}
//id of element to check for and insert control
TextResizeDetector.TARGET_ELEMENT_ID = 'globalNav';
//function to call once TextResizeDetector has init'd
TextResizeDetector.USER_INIT_FUNC = init;