function getAllSheets() {
//if you want ICEbrowser's limited support, do it this way
if( !window.ScriptEngine && navigator.__ice_version ) {
//IE errors if it sees navigator.__ice_version when a window is closing
//window.ScriptEngine hides it from that
return document.styleSheets; }
 if( document.getElementsByTagName ) {
 //DOM browsers - get link and style tags
 var Lt = document.getElementsByTagName('link');
 var St = document.getElementsByTagName('style');
 } else if( document.styleSheets && document.all ) {
//not all browsers that supply document.all supply document.all.tags
 //but those that do and can switch stylesheets will also provide
 //document.styleSheets (checking for document.all.tags produces errors [WHY?!])
 var Lt = document.all.tags('LINK'), St = document.all.tags('STYLE');
} else { return []; } //lesser browser - return a blank array
 //for all link tags ...
 for( var x = 0, os = []; Lt[x]; x++ ) {
 //check for the rel attribute to see if it contains 'style'
 if( Lt[x].rel ) { var rel = Lt[x].rel;
 } else if( Lt[x].getAttribute ) { var rel = Lt[x].getAttribute('rel');
 } else { var rel = ''; }
 if( typeof( rel ) == 'string' &&
 rel.toLowerCase().indexOf('style') + 1 ) {
 //fill os with linked stylesheets
 os[os.length] = Lt[x];
 }
 }
 //include all style tags too and return the array
 for( var x = 0; St[x]; x++ ) { os[os.length] = St[x]; } return os;
}

function changeStyle() {
 for( var x = 0, ss = getAllSheets(); ss[x]; x++ ) {
 //for each stylesheet ...
 if( ss[x].title ) {
 //disable the stylesheet if it is switchable
 ss[x].disabled = true;
 }
 for( var y = 0; y < arguments.length; y++ ) {
 //check each title ...
 if( ss[x].title == arguments[y] ) {
 //and re-enable the stylesheet if it has a chosen title
 ss[x].disabled = false;
 }
 }
 }
 if( !ss.length ) { alert( 'Your browser cannot change stylesheets' ); }
}