// JavaScript Document

window.onload=show;

function left(sl_last, sl_show)	{


	for(var i = 1; i<=sl_last; i++)
	{
		if(document.getElementById('sl_'+i).style.display=='block')	
		{
			sl=i;
			break;
		}
	}
	
	var sl_on=sl_show+sl;
	if(sl_on<=sl_last)
	{
		if (document.getElementById('sl_'+sl)) {document.getElementById('sl_'+sl).style.display='none';}
		if (document.getElementById('sl_'+sl_on)) {document.getElementById('sl_'+sl_on).style.display='block';}
	}
}

function right(sl_last, sl_show) {

	for(var j = sl_last; j>=1; j--)
	{
		if(document.getElementById('sl_'+j).style.display=='block')
		{
			sl=j;
			break;
		}
	}
	
	var sl_on=sl-sl_show;

	if(sl>sl_show)
	{
		if (document.getElementById('sl_'+sl)) {document.getElementById('sl_'+sl).style.display='none';}
		if (document.getElementById('sl_'+sl_on)) {document.getElementById('sl_'+sl_on).style.display='block';}
	}
}

					//-->