//var doAlerts=false;
function changeSheets(whichSheet){
  SaveText(whichSheet);
  if(document.styleSheets){
    var c = document.styleSheets.length;
   // if (doAlerts) alert('Change to Style '+(whichSheet+1));
    //alert(c);
    for(var i=0;i<c;i++){
      if(i!=whichSheet){
        document.styleSheets[i].disabled=true;
       // alert('disable '+i);
      }else{
        document.styleSheets[i].disabled=false;
        //alert('enable '+i);
      }
    }
  }
}

function invertSheets(){
	//alert(' sheet 0 diabled='+document.styleSheets[0].disabled+'\n sheet 1 diabled='+document.styleSheets[1].disabled+'\n sheet 2 diabled='+document.styleSheets[2].disabled+'\n sheet 3 diabled='+document.styleSheets[3].disabled+' \n sheet 4 diabled='+document.styleSheets[4].disabled);
	if (document.styleSheets[3].disabled==true) {
		document.styleSheets[3].disabled=false;
		//SaveInvert(1);
		//invertImages(1);
	}else{
		document.styleSheets[3].disabled=true;
		//SaveInvert(0);
		//invertImages(0);
	}
}

/**
 *
 * @access public
 * @return void
 **/
function invertImages(sheet){

}

/**
 *
 * @access public
 * @return void
 **/
function disableSheets(){
	var c = document.styleSheets.length;
    for(var i=0;i<c;i++){
        document.styleSheets[i].disabled=true;
    }
}

function SaveText(cookieValue) {
 cookieName='text_size';
 nDays=7;
 var today = new Date();
 var expire = new Date();
 if (nDays==null || nDays==0) nDays=1;
 expire.setTime(today.getTime() + 3600000*24*nDays);
 document.cookie = cookieName+"="+escape(cookieValue)
                 + ";expires="+expire.toGMTString()+";path=/";
}

function SaveInvert(cookieValue) {

}