if(window.addEventListener){
	window.addEventListener('load', check, false); 
}else{
	window.attachEvent('onload', check);window.attachEvent('onresize', check)
}
function check(){
var parent = document.getElementById('body')
var divs = parent.getElementsByTagName('div')
if (window.document.body.clientWidth){
if (window.document.body.clientWidth < 900){
for (var i = 0; i < divs.length; i++) {divs[i].style.width = '100%';divs[i].style.height='auto'}
}else{for (var i = 0; i < divs.length; i++) {divs[i].style.width = '47%';divs[i].style.height='10.6em'}
	}
}}