massive_length=2; 
colors_= new Array(massive_length); 
colors_[0] = "#4f2d14"; 
colors_[1] = "#6b3d17"; 
var next_ = 0; 
function blink() 
{ 
headcolor= colors_[next_];
document.getElementById("blink").style.backgroundColor=headcolor; 
next_++; 
if(next_>massive_length-1) next_=0; 
window.setTimeout("blink()",300); 
}