code: function removeNavGrid(domNodeWrapperList, domNode) {
  		if(!domNodeWrapperList){
  			return;
  		}
  		
  		for(var i = 0; i < domNodeWrapperList.length ; i++){
  			if(domNodeWrapperList[i].domNode === domNode){
  				domNodeWrapperList.splice(i, 1);
  				return;
  			}
  		}
  	}
docs: Remove a grid navigation item from a given array. A grid navigation item is presented by a wrapper object wrapping the domNode, widget and onClick properties.
  
  @param {Array} domNodeWrapperList the array that holds the grid navigation item. Normally the .gridChildren property from a row model.
  @param {DomNode} domNode the html dom node representing a grid. Normally left or right arrow keys on the current row highlight the dom node.
  When a grid is rendered, the caller has to decide what dom node can be passed.