var css;
function include_css(css_file) {
    var html_doc = document.getElementsByTagName('head')[0];
    css = document.createElement('link');
    css.setAttribute('rel', 'stylesheet');
    css.setAttribute('type', 'text/css');
    css.setAttribute('href', css_file);
    html_doc.appendChild(css);
    return false;
}


function checkBodyOnLoad () { 
var height=0;var width=0;
if (self.screen) {
// for NN4 and IE4
width = screen.width 
height = screen.height
}
if (width<=1024){ include_css("css/style1.css");}
if (width>1024){ include_css("css/style2.css");}
}