function changeStyle( sheet, index ) {
	var htmlFrame = htmlFrame0;
	var cssFrame = cssFrame0;
	if( index == 1 ) {
	    htmlFrame = htmlFrame1;
	    cssFrame = cssFrame1;
	}
	links = htmlFrame.document.getElementsByTagName( "link" );
	htmlFrame.document.styleSheets[0].disabled = true;
	links[0].href = sheet;
	cssFrame.location.href = sheet;
}