if(window.attachEvent) {
  window.attachEvent('onload',minWidth);	
  window.attachEvent('onresize',minWidth);	
}
function minWidth() {
  var html = document.documentElement;
  var body = document.getElementsByTagName('body')[0];
  if(html.clientWidth<970) {
	  body.style.width = '970px';
  }
  else {
	  body.style.width = 'auto';  
  }
  
}