function tabs(num,sum)
{
for(i=1;i<=sum;i++)
{
	if(i==num){
  eval(document.getElementById("tabs_"+i)).className = "classT"; 
  eval(document.getElementById("id"+i)).style.display = "block"; 
  }
  else{
	  eval(document.getElementById("tabs_"+i)).className = "";
	  eval(document.getElementById("id"+i)).style.display = "none";
	  }
}
}