function menu(n)
            {				
             if (document.getElementById(n).style.display=='block')
              {
                document.getElementById(n).style.display='none';
              }
             else
              {
              document.getElementById(n).style.display='block';
              }			  
            }

function drop(m) 
	{
	i=1;	
	while(document.getElementById('k_'+i))
		{
		 document.getElementById('k_'+i).style.display='none';		 
		 i++;		 
		}
		document.getElementById(m).style.display='block'		
	}
	
	
function fp_show(tab,cls) 
{
	i=1;
	
	while (document.getElementById("tab_"+i))
	 {
	 document.getElementById("tab_"+i).style.display='none';
	 document.getElementById("a"+i).className='';
	 i++;
	 
	 }
	 document.getElementById(tab).style.display='block';
	 document.getElementById(cls).className='sel';
}



function product_details(product,cl) 
{
	i=1;
	
	while (document.getElementById("product_"+i))
	 {
	 document.getElementById("product_"+i).style.display='none';
	 document.getElementById("b"+i).className='';
	 i++;
	 
	 }
	 document.getElementById(product).style.display='block';
	 document.getElementById(cl).className='sel';
}