diff --git a/megaupload/megaupload.js b/megaupload/megaupload.js
index 27b555e..fd249da 100644
--- a/megaupload/megaupload.js
+++ b/megaupload/megaupload.js
@@ -14,33 +14,33 @@ var mgDownloadHelper = {}
 mgDownloadHelper.getFileName = function(doc) 
 {
 	try {
-		var downloadlink = doc.getElementById("downloadlink");
-		var href = downloadlink.firstChild.href;
-		var p = href.lastIndexOf("/")
-		if (p!=-1) {
-			var fileName = href.substring(p + 1);
-			fileName = fileName.replace("%20", " ");
-			return fileName;
+		var downloadlink = doc.getElementById("downloadlink"); // get all the elements with the element with id as downloadlink
+		var href = downloadlink.firstChild.href; // take the first child and get the href element
+		var p = href.lastIndexOf("/")      // taking out the last element after the / which is name of any object
+		if (p!=-1) {  				// check if there is / in the above href i.e. there was linkwith something 
+			var fileName = href.substring(p + 1);	// creates variable filemane with name of the original file on mega extratcted above
+			fileName = fileName.replace("%20", " "); // replace html space code(%20) with space of string
+			return fileName; 	// return the extracted filename
 		} else {
-			return "";
+			return "";		// other wise no file name was extracted
 		}
 	} catch(ex){
-		return "";
+		return ""; 			// if exception was catched then return null file name 
 	}
 }
 mgDownloadHelper.onLoad = function() 
 {
 	var doc = document;
-	var downloadcounter = doc.getElementById("downloadcounter");
-	if (downloadcounter) {
-		downloadcounter.style.display = 'none';
-		var downloadlink = doc.getElementById("downloadlink");
-		if (downloadlink) {
-			downloadlink.hidden = true;
-			if (downloadlink.firstChild) downloadlink.firstChild.style.display = 'none';
+	var downloadcounter = doc.getElementById("downloadcounter");   // getting all the elements with id downloadcounter
+	if (downloadcounter) {   // if there exist element with downlaodcounter
+		downloadcounter.style.display = 'none';			// dont show the element wich has id downloadcounter
+		var downloadlink = doc.getElementById("downloadlink");   // getting all the elements with id downloadlink
+		if (downloadlink) {				// if there exist element with download link
+			downloadlink.hidden = true; // make downloadlink hidden
+			if (downloadlink.firstChild) downloadlink.firstChild.style.display = 'none'; //if there is chil d of downloadlink then make it hidden
 		}
-
-		var folderPath = "";
+			
+		var folderPath = "";    // setting the path for download
 
 		doc.destFile = null;
 		var div = doc.createElement("div");
@@ -57,18 +57,18 @@ mgDownloadHelper.onLoad = function()
 		downloadcounter.parentNode.appendChild(div);
 
 		var ina = setInterval(function() {
-			var countdown = doc.getElementById("countdown");
+			var countdown = doc.getElementById("countdown");		// get elements with countdoen
 			confirmText.innerHTML = "Now you can continue browsing, the file will be downloaded automatically!<br>Your automatic download will start in <font style='font-size:12px;color:#df3f4e'><b>"+ countdown.innerHTML +"</b></font> seconds.";
 			
-			if (countdown.innerHTML == "1") {
+			if (countdown.innerHTML == "1") { 			//if countdown elements is one the set timout to 1500ms
 				var inaa = setTimeout(function() {
 					var downloadlink = doc.getElementById("downloadlink");
 					document.location = downloadlink.firstChild.href;
 				}, 1500);
 				clearInterval(ina)
 			}
-		},1000);
+		},1000);   // sets timer for 1000ms 
 	}
 }
 
-mgDownloadHelper.onLoad();
+mgDownloadHelper.onLoad();			// calls on load function