function domReady( f ) {
	if ( domReady.done ) return f();
	if ( domReady.timer ) {
		domReady.ready.push( f );
	} else {
		if (window.addEventListener)
			window.addEventListener('load',isDOMReady, false);
		else if (window.attachEvent)
			window.attachEvent('onload',isDOMReady);
		domReady.ready = [ f ];
		domReady.timer = setInterval( isDOMReady, 13 );
		}
	}
function isDOMReady(){
	if ( domReady.done ) return false;
		if ( document && document.getElementsByTagName && document.getElementById && document.body ) {
			clearInterval( domReady.timer );
			domReady.timer = null;
			for ( var i = 0; i < domReady.ready.length; i++ )
				domReady.ready[i]();
			domReady.ready = null;
			domReady.done = true;
			}
	}
function showHide(hide,show)
	{
	document.getElementById(hide).style.display="none";
	document.getElementById(show).style.display="block";
	}
function showHideJQ(show)
	{
	for(i=1;i<=document.getElementById("blocks").childNodes.length;i++)
		$("block_"+i).hide();
	$("block_"+show).show();
	}