function showBlock (id) {
	var coll = document.getElementById("pageContent").childNodes;
	if (id==0) {
		for (i=0;i<coll.length;i++) 
		{
			coll[i].style.display="block";
		}
	}
	else 
	{
		for (i=0;i<coll.length;i++) 
		{
			if (coll[i].className=="sMenu") 
			{
				coll[i].style.display="none";
			}
		}
		if ( document.getElementById(id)  )
		{
			document.getElementById(id).style.display = "block";
		}
	}
}
        
function selectOption(val) {
	var s = document.getElementById('selExchange');
	for( var i=0; i<s.options.length; i++ )
	{
		if ( s.options[i].value == val )
			s.options[i].selected = true;         
	}   
}