var agt=navigator.userAgent.toLowerCase();
    var os = navigator.platform.toLowerCase();
    var is_opera = (agt.indexOf("opera") != -1);
    var is_netscape= (agt.indexOf("netscape") != -1);
    var is_konqueror = (agt.indexOf("konqueror") != -1);
    var is_ppc = (os.indexOf("macppc") != -1);
    var is_safari = ((agt.indexOf('safari')!=-1)&&(agt.indexOf('mac')!=-1))?true:false;
    if (is_opera) {
document.write('<style type="text/css">#texte {margin-left:362px;}</style>');
}
 if ((is_safari)||(is_ppc)||(is_konqueror)) {
 document.write('<style type="text/css">#texte {margin-left:362px;}</style>');
};
if (is_netscape) {
document.write('<style type="text/css">#texte {margin-left:240px;}</style>');
};