//configure interval btw flash (1000=1 second)
var speed=500

function flashit(){
var crosstable=document.getElementById? document.getElementById("myexample") : document.all? document.all.myexample : ""
if (crosstable){
if (crosstable.style.borderColor.indexOf("yellow")!=-1)
crosstable.style.borderColor="red"
else
crosstable.style.borderColor="yellow"
}
}
setInterval("flashit()", speed)