var width = screen.width;
var res =(((!(800-width))*1)+((!(1024-width))*2)+((!(1152-width))*3)+((!(1280-width))*4)+((!(1600-width))*5));
 if(!(res)) {res = 1};
 if (res=='1') {cssfile='main-f81.css';}
 if (res=='2') {cssfile='main2.css';}
 if (res=='3') {cssfile='main2.css';}
 if (res=='4') {cssfile='main2.css';}
 if (res!='1' && res!='2' && res!='3' && res!='4') {cssfile='main2.css';}
document.write('<link rel="stylesheet" type="text/css" href="' +cssfile+'" />');