/*
  Utility methods
  */
  mejs.Utility = {
  	encodeUrl: function(url) {
  		return encodeURIComponent(url); //.replace(/\?/gi,'%3F').replace(/=/gi,'%3D').replace(/&/gi,'%26');
  	},
  	escapeHTML: function(s) {
  		return s.toString().split('&').join('&amp;').split('<').join('&lt;').split('"').join('&quot;');
  	},
  	absolutizeUrl: function(url) {
  		var el = document.createElement('div');
  		el.innerHTML = '<a href="' + this.escapeHTML(url) + '">x</a>';
  		return el.firstChild.href;
  	},
  	getScriptPath: function(scriptNames) {
  		var
  			i = 0,
  			j,
  			codePath = '',
  			testname = '',
  			slashPos,
  			filenamePos,
  			scriptUrl,
  			scriptPath,			
  			scriptFilename,
  			scripts = document.getElementsByTagName('script'),
  			il = scripts.length,
  			jl = scriptNames.length;
  			
  		// go through all <script> tags
  		for (; i < il; i++) {
  			scriptUrl = scripts[i].src;
  			slashPos = scriptUrl.lastIndexOf('/');
  			if (slashPos > -1) {
  				scriptFilename = scriptUrl.substring(slashPos + 1);
  				scriptPath = scriptUrl.substring(0, slashPos + 1);
  			} else {
  				scriptFilename = scriptUrl;
  				scriptPath = '';			
  			}
  			
  			// see if any <script> tags have a file name that matches the 
  			for (j = 0; j < jl; j++) {
  				testname = scriptNames[j];
  				filenamePos = scriptFilename.indexOf(testname);
  				if (filenamePos > -1) {
  					codePath = scriptPath;
  					break;
  				}
  			}
  			
  			// if we found a path, then break and return it
  			if (codePath !== '') {
  				break;
  			}
  		}
  		
  		// send the best path back
  		return codePath;
  	},
  	secondsToTimeCode: function(time, forceHours, showFrameCount, fps) {
  		//add framecount
  		if (typeof showFrameCount == 'undefined') {
  		    showFrameCount=false;
  		} else if(typeof fps == 'undefined') {
  		    fps = 25;
  		}
  	
  		var hours = Math.floor(time / 3600) % 24,
  			minutes = Math.floor(time / 60) % 60,
  			seconds = Math.floor(time % 60),
  			frames = Math.floor(((time % 1)*fps).toFixed(3)),
  			result = 
  					( (forceHours || hours > 0) ? (hours < 10 ? '0' + hours : hours) + ':' : '')
  						+ (minutes < 10 ? '0' + minutes : minutes) + ':'
  						+ (seconds < 10 ? '0' + seconds : seconds)
  						+ ((showFrameCount) ? ':' + (frames < 10 ? '0' + frames : frames) : '');
  	
  		return result;
  	},
  	
  	timeCodeToSeconds: function(hh_mm_ss_ff, forceHours, showFrameCount, fps){
  		if (typeof showFrameCount == 'undefined') {
  		    showFrameCount=false;
  		} else if(typeof fps == 'undefined') {
  		    fps = 25;
  		}
  	
  		var tc_array = hh_mm_ss_ff.split(":"),
  			tc_hh = parseInt(tc_array[0], 10),
  			tc_mm = parseInt(tc_array[1], 10),
  			tc_ss = parseInt(tc_array[2], 10),
  			tc_ff = 0,
  			tc_in_seconds = 0;
  		
  		if (showFrameCount) {
  		    tc_ff = parseInt(tc_array[3])/fps;
  		}
  		
  		tc_in_seconds = ( tc_hh * 3600 ) + ( tc_mm * 60 ) + tc_ss + tc_ff;
  		
  		return tc_in_seconds;
  	},
  	
  
  	convertSMPTEtoSeconds: function (SMPTE) {
  		if (typeof SMPTE != 'string') 
  			return false;
  
  		SMPTE = SMPTE.replace(',', '.');
  		
  		var secs = 0,
  			decimalLen = (SMPTE.indexOf('.') != -1) ? SMPTE.split('.')[1].length : 0,
  			multiplier = 1;
  		
  		SMPTE = SMPTE.split(':').reverse();
  		
  		for (var i = 0; i < SMPTE.length; i++) {
  			multiplier = 1;
  			if (i > 0) {
  				multiplier = Math.pow(60, i); 
  			}
  			secs += Number(SMPTE[i]) * multiplier;
  		}
  		return Number(secs.toFixed(decimalLen));
  	},	
  	
  	/* borrowed from SWFObject: http://code.google.com/p/swfobject/source/browse/trunk/swfobject/src/swfobject.js#474 */
  	removeSwf: function(id) {
  		var obj = document.getElementById(id);
  		if (obj && /object|embed/i.test(obj.nodeName)) {
  			if (mejs.MediaFeatures.isIE) {
  				obj.style.display = "none";
  				(function(){
  					if (obj.readyState == 4) {
  						mejs.Utility.removeObjectInIE(id);
  					} else {
  						setTimeout(arguments.callee, 10);
  					}
  				})();
  			} else {
  				obj.parentNode.removeChild(obj);
  			}
  		}
  	},
  	removeObjectInIE: function(id) {
  		var obj = document.getElementById(id);
  		if (obj) {
  			for (var i in obj) {
  				if (typeof obj[i] == "function") {
  					obj[i] = null;
  				}
  			}
  			obj.parentNode.removeChild(obj);
  		}		
  	}
  };