var tables = document.getElementsByTagName("table");
for ( var t = 0; t < tables.length; t++ ) {
	if(tables[t].className == 'paint'){
		var rows = tables[t].getElementsByTagName("tr");
		for ( var i = 0; i < rows.length; i += 1 ){
			rows[i].cells[0].className = "paint_color";
			if (rows[i].cells[0].rowSpan >1){
				var r = rows[i].cells[0].rowSpan;
				i=i+r-1;
			}
		}
	}
}