function ShowBlock(nodeId1, nodeId2, nodeId3)
{
    var node1 = document.getElementById(nodeId1);
    var node2 = document.getElementById(nodeId2);
    var node3 = document.getElementById(nodeId3);
    if (node1)
    {
    	var className = node1.className;
        if (className == '')
        	node1.className = 'hidden';
        else if (className == 'hidden')
        	node1.className = '';
    } 
    if (node2)
    {
    	var className = node2.className;
        if (className == 'inline')
        	node2.className = 'hidden';
        else if (className == 'hidden')
        	node2.className = 'inline';
    } 
    if (node3)
    {
    	var className = node3.className;
        if (className == 'inline')
        	node3.className = 'hidden';
        else if (className == 'hidden')
        	node3.className = 'inline';
    } 
    return false;
}