// Radio Object

function Radio(imgNames,length,defaultValue,layer){
	this.layer = (layer)?layer:"undefined"
	this.imgNames = imgNames
	this.length = length
	this.change = RadioChange
	this.value = (defaultValue)?defaultValue:"undefined"
}
function RadioChange(index,value) {
	this.value = value
	for(var i=0; i<this.length; i++) changeImage(this.layer,this.imgNames+i,'bt_env_0_0');
	changeImage(this.layer,this.imgNames+index,'bt_env_0_1')
}