// JavaScript Document

function dark(row){ 
	if(document.getElementsByTagName){  
		idname = 'therow' + row;
		var row = document.getElementById(idname);  
		var col = row.getElementsByTagName("td"); 
		col[0].className = "effect"; 
		
	}
}

function light(row){ 
	if(document.getElementsByTagName){  
		idname = 'therow' + row;
		var row = document.getElementById(idname);   
		var col = row.getElementsByTagName("td");   
		col[0].className = "return"; 
	}
}