function tableRows() {
	var table = document.getElementById("itemAdTable");  
	if(table) {
		var rows = table.getElementsByTagName("tr");  
		for(i = 0; i < rows.length; i++) {          
			if(i % 2 == 0) {
				rows[i].className = "grey_row";
			}
			else {
				rows[i].className = "white_row";
			}      
		}
	}
}