How to blink the grid row ?

in my project their is one feature, blink the row after some time so i added cls to grid row.

it's working but now i am facing new problem if their is more than 150 row blink at a time

web page become slow

is any memory leakage ?

is any other alternative to blink the grid row ?



i added my code

store.each(function(record){

if(typeof element != 'undefined') {

var childDivs = element.childNodes

for(var i = 0; i < childDivs.length; i++) {

Ext.fly(childDivs[i]).addCls(" blink");

}



}

});