function displaySection(the_section, newclass, section_array){
 
//  if (document.getElementById(the_section).className=="show"){
 //   document.getElementById(the_section).className = "hide";return
  //}
  for (i=0;i<section_array.length;i++){
  var my_section = document.getElementById(section_array[i]);
    my_section.className = "hide";
  }
  document.getElementById(the_section).className = "show";
}