var html = document.documentElement;
//alert("Razmer okna: "+ html.clientWidth +"х"+ html.clientHeight);
if (html.clientWidth < 1000) {document.write (''); /*alert("1000")*/}
else {if (html.clientWidth < 1200) {document.write (''); /*alert("1200")*/}
else {if (html.clientWidth < 1400) {document.write (''); /*alert("1400")*/}
else {document.write (''); /*alert("xxx")*/}
}
}