<script language="javascript">
var idd = "";
function func(idd){
	if(document.getElementById("check"+idd).checked){
		document.getElementById("save"+idd).disabled=false;
		document.getElementById("del"+idd).disabled=false;
	}
	else{
		document.getElementById("save"+idd).disabled=true;
		document.getElementById("del"+idd).disabled=true;	
	}	
}
</script>

<input id="save1" type="button" value="сохранить"  disabled="disabled" /> <input id="del1" type="button" value="удалить"  disabled="disabled" />
<input id="check1" type="checkbox" onChange="func(1)" />

<input id="save2" type="button" value="сохранить"  disabled="disabled" /> <input id="del2" type="button" value="удалить"  disabled="disabled" />
<input id="check2" type="checkbox" onChange="func(2)" />