function getElementsByClassName(className, tag, elm){
	var testClass = new RegExp("(^|\\\\s)" + className + "(\\\\s|$)");
	var tag = tag || "*";
	var elm = elm || document;
	var elements = (tag == "*" && elm.all)? elm.all : elm.getElementsByTagName(tag);
	var returnElements = [];
	var current;
	var length = elements.length;
	for(var i=0; i<length; i++){
		current = elements[i];
		if(testClass.test(current.className)){
			returnElements.push(current);
		}
	}
	return returnElements;
}

function colorizeTables()
{
		var colorarr = new Array('#efefef', '#fff');
		var tables = getElementsByClassName('sa_table')
		for(var x = 0; x < tables.length; x++)
		{
			var rows = tables[x].getElementsByTagName('tr');
			for(var i = j = 0; i < rows.length; i++)
			{
				if(i > 0)
				{
						rows[i].style.backgroundColor = colorarr[j % colorarr.length];
						j++;
				}
			}
		}
}