联动选择值

<td>

     <select id="monitorTypeNew"  onChange="changeServer(this.options[this.selectedIndex].value);">

<option value="snmp">snmp</option>

<option value="oracle">oracle</option>

     </select>

</td>

function changeServer(obj){
		if(obj == "snmp"){
			....
		}else if(obj == "oracle"){
			.......
		}
	}