function listbox(elem){

	elem=document.getElementById(elem);
	if (elem.style.display=='')
	{
		elem.style.display='none';	
	}
	
	if(elem.style.display=='none')
	{
		elem.style.display='block';	
	}
	else
	{
		elem.style.display='none';	
	}
	
	/*alert(elem.style.display);*/
}

function listbox_hover(number)
{
	block = number;
	block=document.getElementById(block);
	block.style.backgroundColor='#d3e0bc';
	/*block.style.cursor='pointer';*/
	

	/*alert(block);*/
}

function listbox_out(number)
{
	block = number;
	block=document.getElementById(block);
	block.style.backgroundColor='white';
	/*alert(block);*/
}

function hintshow(elem)
{
	elem=document.getElementById(elem);
	elem.style.display='block';
}

function hinthide(elem)
{
	elem=document.getElementById(elem);
	elem.style.display='none';
}