var flag_promo = 0;var flag_promo_menu = 0;
function fn_onload()
{
document.getElementById(row1).style.display = 'none';
document.getElementById(row2).style.display = 'none';
document.getElementById(row3).style.display = 'none';
}

function instrument()
{
 if(flag_promo==0)
 {
  document.getElementById('row1').style.display = 'block';
  document.getElementById('row2').style.display = 'none';
  document.getElementById('row3').style.display = 'none';
  flag_promo_menu=1;
  flag_promo = 1;
 }
 else if(flag_promo==1)
 {
  document.getElementById('row1').style.display = 'none';
  document.getElementById('row2').style.display = 'none';
  document.getElementById('row3').style.display = 'none';
  flag_promo = 0;
 }

 if(flag_promo_menu != 1 && flag_promo_menu != 0)
 {
 	document.getElementById('row1').style.display = 'block';
    document.getElementById('row2').style.display = 'none';
    document.getElementById('row3').style.display = 'none';
 }
}

function newarrivals()
{
 if(flag_promo==0)
 {
  document.getElementById('row2').style.display = 'block';
   document.getElementById('row1').style.display = 'none';
  document.getElementById('row3').style.display = 'none';
  flag_promo_menu=2;
  flag_promo = 1;
 }
 else if(flag_promo==1)
 {
  document.getElementById('row2').style.display = 'none';
  document.getElementById('row1').style.display = 'none';
  document.getElementById('row3').style.display = 'none';
  flag_promo = 0;
 }
 if(flag_promo_menu != 2 && flag_promo_menu != 0)
 {
 	document.getElementById('row1').style.display = 'none';
    document.getElementById('row2').style.display = 'block';
    document.getElementById('row3').style.display = 'none';
 }

}

function sets()
{
 if(flag_promo==0)
 {
 document.getElementById('row3').style.display = 'block';
 document.getElementById('row2').style.display = 'none';
  document.getElementById('row1').style.display = 'none';
  flag_promo_menu=3; 
  flag_promo = 1;
 }
 else if(flag_promo==1)
 {
  document.getElementById('row3').style.display = 'none';
  document.getElementById('row2').style.display = 'none';
  document.getElementById('row1').style.display = 'none';
  flag_promo = 0;

 }
 if(flag_promo_menu != 3 && flag_promo_menu != 0)
 {
 	document.getElementById('row1').style.display = 'none';
    document.getElementById('row2').style.display = 'none';
    document.getElementById('row3').style.display = 'block';
 }


}