String.prototype.Right = function(len)
{
	if(isNaN(len)||len==null)
	{
			len = this.length;
	}
	else
	{
			if(parseInt(len)<0||parseInt(len)>this.length)
			{
					len = this.length;
			}
	}
   
	return this.substring(this.length-len,this.length);
}

function showCate(j) 
{
	var a = j.Right(1);
	for(var i=0;i<8;i++)
	{
		var mf = "mf"+i;
		var catef=document.getElementById(mf);
		if( i == a )
		{
		  if(i == 0)
		  {
		     catef.className = "menu_current1";
          }
		  else
		  {
		     catef.className = "menu_current";
		  }
		}
	    else
		{
		  catef.className = "menu_normal";
		}
	}
}

function showSm(j) 
{ 
    var a = j.Right(1);
	for(var i=1;i<6;i++)
	{
		var na = "na"+i;
		var catei=document.getElementById(na);
		if(i == a)
		{
	       catei.style.display = 'block';
		}
	    else
		{
		   catei.style.display = 'none';
		}
	}
}
function hidSm()
{
	for(var i=1;i<6;i++)
	{
		var na = "na"+i;
		var catei=document.getElementById(na);
	    catei.style.display = 'none';
	}
}