function alternateRowColors() {
    var className = 'anaTable';
    var rowcolor = 'plava';
    var defaultrowcolor = 'light';
    var rows, arow;
    var tables = document.getElementsByTagName("table");
    var rowCount = 0;
	var fieldCount = 0;
	var ZSE = 18;
	var VSE = 20;
    for(var i=0;i<tables.length;i++) {
        if(tables.item(i).className.indexOf(className)>-1) {
            atable = tables.item(i);
            var rows = atable.getElementsByTagName("tr");
			try{
	            for(var j=1;j<rows.length;j+=2) {
					rows[j].className = defaultrowcolor;
	            }
				for(var j=2;j<rows.length;j+=2) {
					rows[j].className = rowcolor;
	            }
			}
			catch (e){
				msg = e.message;
			}
        }
    }
}