var mouse_blocks=new Array(0,0,0,0);
var active_block=0;

function off_block(n) {
	var x=document.getElementById("popular_menu_"+n);
	if (x && (!mouse_blocks[n-1]))
		x.style.display="none";
}

function popular_expcol(number,expcol) {
	var x=document.getElementById("popular_menu_"+number);
	if (x) {
		if (expcol) {
			x.style.display="block";
			mouseoverblock=0;
			gsc_emptyresults(__results);
			mouse_blocks[number-1]=1;
			if ((active_block>0) && (active_block!=number))
				document.getElementById("popular_menu_"+active_block).style.display="none";
			active_block=number;
		} else {
			mouse_blocks[number-1]=0;
			window.setTimeout("off_block("+number+")", 400);
		}
	}
}