function textCounter4(field, countfield, maxlimit)
{ var i,k;
for(i=0;i<field.value.length;i++)
{
     with(field.value.substring(i,i+1))
     { k=field.value.substring(i,i+1);
if(k.length<(replace(/([\u0391-\uFFE5])/ig,'11').length))
         break;
     }
    }
...
里面的
if(k.length<(replace(/([\u0391-\uFFE5])/ig,'11').length))
         break;