function surfto(select1,pre,post,name,w,h) {
        var myindex=select1.selectedIndex
        if (select1.options[myindex].value != 0) {
                which = select1.options[myindex].value;
                var newurl = pre + String(which) + post;
		var str = "width=" + w + ",height=" + h + ",scrollbars=1,resize=1";
        	var OpenWindow = window.open(newurl,name,str);
   		OpenWindow.document.close();
   		OpenWindow.document.focus();
        }
}