function see_and_hidde(el){
 var temp=document.getElementById(el).style.display;
 if(temp=="none"){document.getElementById(el).style.display="block";}
 if(temp=="block"){document.getElementById(el).style.display="none";}
}

function see_and_hidde3(el,ell,elll){
 var temp=document.getElementById(el).style.display;
 if(temp=="none"){document.getElementById(el).style.display="block";}
 else{document.getElementById(el).style.display="none";}

 var temp=document.getElementById(ell).style.display;
 if(temp=="none"){document.getElementById(ell).style.display="block";}
 else{document.getElementById(ell).style.display="none";}

 var temp=document.getElementById(elll).style.display;
 if(temp=="none"){document.getElementById(elll).style.display="block";}
 else{document.getElementById(elll).style.display="none";}

}