function Hover(id) {
	eval(id).setAttribute("className","but buthover");
}

function noHover(id) {
	eval(id).setAttribute("className","but");
}
function Active(id) {
	eval(id).setAttribute("className","but buthover");
}

window.onload = function() {
	var tables = document.getElementsByTagName("table");
	for ( var t = 0; t < tables.length; t++ ) {
		if (tables[t].className == 'catalog') {
			var rows = tables[t].getElementsByTagName("tr");
			for ( var i = 0; i < rows.length; i += 2 ) {
				if ( !/(^|s)odd(s|$)/.test( rows[i].className )) {
					rows[i].className += " odd";
				}
			}
		}
	}
 }