window.onresize = CountColumnsAndSetClass;
window.onload = CountColumnsAndSetClass;
			
var x = document.documentElement.clientWidth;
x = x - (x % 10);
var y = 760
			
function CountColumnsAndSetClass(){
var c=Math.round(y/(250));
cc = c>0?c:1; 
document.getElementsByTagName('body')[0].className = 'columns' + cc;}