[PHP]
//多个控件只能有一个能取值的校验
function onlyOneValue()
{
var i,j,val,myValue;
var flag = 0,radioValue = -1;
var controlName,controlValue;
var args = onlyOneValue.arguments;
var warnInfo = args[0];

for ( i=1; i < (args.length-1); i+=2)
{
controlName = args;
controlValue = args[i+1];
radioValue = -1;

if( controlName.indexOf("(radio)")>0)
{
controlName = controlName.substring(0,controlName.length-7);
radioValue = 0;
}

val = MM_findObj_( controlName );
for ( j = 0; j < val.length ; j++ )
if( val[j].checked )
radioValue = j;

if( val )
{
if( radioValue >= 0 )
myValue = val[radioValue].value;
else
myValue = val.value;

if( myValue != controlValue)
flag ++;
}
}

if ( flag != 1 )
{
alert( warnInfo+'必须选择一种并且只能选择一种，请确认。');
return false;
}
return true;
}
[/PHP]