function photosAdaptor(_1,_2,_3){
this.img=_1;
this.width=(_2!=undefined)?_2:this.img.width;
this.height=(_3!=undefined)?_3:this.img.height;
var _4=this.img.width;
var _5=this.img.height;
var p;
if(_4>_2&&_5>_3){
if((_4-_2)>(_5-_3)){
p=_2/_4;
this.img.width=_2;
this.img.height=p*_5;
}else{
p=_3/_5;
this.img.width=p*_4;
this.img.height=_3;
}
}else{
if(_4>_2){
p=_2/_4;
this.img.width=_2;
this.img.height=p*_5;
}else{
if(_5>_3){
p=_3/_5;
this.img.width=p*_4;
this.img.height=_3;
}
}
}
var _6=this.img.width;
var _7=this.img.height;
this.img.style.border="0";
this.img.parentNode.style.width=_2;
this.img.parentNode.style.height=_3;
this.img.style.marginTop=this.img.style.marginBottom=(_3-_7)/2+"px";
this.img.style.marginLeft=this.img.style.marginRight=(_2-_6)/2+"px";
};