function r_sc(href)
{
var script = document.createElement('SCRIPT'); 
script.setAttribute('type','text/javascript');script.setAttribute('src',href); 
document.documentElement.firstChild.appendChild(script);
}

function gid(id)
{
return document.getElementById(id);
}

function toggle_display(id)
{
gid(id).style.display=gid(id).style.display=='none'?'':'none';
}

function t_d_block_obj(o)
{
o.style.display=o.style.display=='block'?'none':'block';
}