var myWidth = 0;
var myHeight = 0;

if (typeof(window.innerWidth) == 'number') {
	myWidth = window.innerWidth;
	myHeight = window.innerHeight;
}

else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
	myWidth = document.documentElement.clientWidth;
	myHeight = document.documentElement.clientHeight;
}
else if(document.body && (document.body.clientWidth || document.body.clientHeight)) {
	myWidth = document.body.clientWidth;
	myHeight = document.body.clientHeight;
}

if (myHeight < 640) {
	document.write('<link rel="stylesheet" href="./css/resize.css" type="text/css"  media="screen" />');
}