if(window.attachEvent){
	window.attachEvent('onload', mmwidth);
	window.attachEvent('onresize', mmwidth); 
} else {  
	window.addEventListener('onload', mmwidth, false);
	window.addEventListener('onresize', mmwidth, false);
} 
function mmwidth(){
	document.getElementById('wrap').style.width = ((document.documentElement.clientWidth || document.body.clientWidth) < 1000) ? '1000px' : ((document.body.clientWidth > 1600) ? '1600px' : '100%');
};