add method signature to js code

lib/js/misc/js_util.js

@@ -1,5 +1,10 @@
 var AdminData = AdminData || {};
 
+/**
+ * A general Utility
+ * @namespace AdminData
+ * @class jsUtil
+ */
 AdminData.jsUtil = {
 
   // TODO since advance search was not working with util confirm , window.confirm is used directly
@@ -21,7 +26,12 @@ AdminData.jsUtil = {
 		$('.colorize tr:even').addClass('even');
 	},
 
-	// returns date in string format. example: 07-September-2009  
+  /**
+   * Returns the input date in string format.
+   *
+   * @param {date} input date 
+   * @return {string} The string value of input date
+   */
 	dateToString: function(date) {
 		var month = (date.getMonth() + 1).toString();
 		var day = date.getDate().toString();
@@ -31,6 +41,12 @@ AdminData.jsUtil = {
 		return day + "-" + months[month - 1] + "-" + date.getFullYear();
 	},
 
+  /**
+   * Generate a random number between 1 and 10000000
+   *
+   * @return {Integer} a random Integer
+   *
+   */
 	randomNumber: function() {
 		var maxVal = 100000000,
 		minVal = 1;