- allow data regenerating in sample
 - add loader animated image while generating random data for grid
 - data generating is a long runnig script if important data ==> split script on using seTimeout
 - add method getStatistics to WGrid
 - display grid info in sample
 - put demo script in separate js file
 - put demo styles in separate css file
 - add title to tooltip cols/rows
 - beautify demo page (css)
 - add WGrid instance as parameter in onCreate(...)
- add columns Title and rows title
 - eliminate unused functions
 - establish 10 differents stages demos
- add transpose grid faculty ( use grid.toggleGridTranspose(); )
 - new userCtrl interception : "onGridTranspose" fire transpose event to user
 - rename userCtrl interception : "onCreateCell" --> "onUpdateCellState" let user interpose on updating style of cell
 - new userCtrl interception : "onCreateCell" let user customize cell created with type[????]
 - new userCtrl interception : "onCreateCrossCell" let user customize empty cross cell
 - new userCtrl interception : "onDrawComplete" fire end draw function
 - in demo with userGridCtrl defined : implement customization of "onCreateCrossCell" with action transpose
 - in demo with userGridCtrl defined : implement customization of "onCreateCell" with action filtering cols and rows
 - add demo 11 with very big data grid 200x200
 - new grid option : "always scrollbars visible" [true/false]
 - new grid option : "navigation mode" [BAR/SCROLL]
 - allow toggle navigation mode : 'BAR' <--> 'SCROLL'
 - new grid option : "navigation visible" [true/false]
 - new grid option : "preserve grid width" [true/false] (when filter applied on cols, grid maintain its width)
- change already selected values format
 - change disabled values format