function removeNull() {
	var gg = document.getElementsByTagName("table");
	
	for( var i=0; i < gg.length; i++) {
		if(gg[i].id == "recent-table") {
			var sg = gg[i].getElementsByTagName("div");
			
			for( var k=0; k < sg.length; k++) {
				if((( sg[k].className == "sale-price-bold" ) || (sg[k].className == "sale-price")) && (sg[k].innerHTML == "null")) {
					sg[k].style.display="none";
				}
			}
		}
	}
}