debug issue

var g29 = this.getField("29G");
var g26 = this.getField("26G");
var g1  = this.getField("Gauge");

if (g29.value == 'Yes') && (g26.value == 'Yes')
|| (g29.value == 'Off') && (g26.value == 'Off'){
g1.value='ERROR'
} else if (g29.value == 'Yes') && (g26.value == 'Off') {
g1.value='29 GA'
} else if (g29.value == 'Off') && (g26.value == 'Yes') {
g1.value='26 GA'
}

Any idea what I'm doing wrong? I'm gettng a syntax error at g1.value='ERROR'