function dw_Rotator(path, imgName){
	this.imgName = imgName||"img";
	this.path=path||"";
	this.imgs=[];
};


dw_Rotator.prototype.addImages=function(){
	var img;
	for(var i=0;arguments[i];i++){
		img=new Image();
		img.src=this.path+arguments[i];
		img.name=this.imgName+(i+1);
		img.id=this.imgName+(i+1);
		this.imgs[this.imgs.length]=img;
	}
	if(this.imgs.length > 0) {  
		document.getElementById(img.name).src = this.showBig(img.src);
	}
};


dw_Rotator.prototype.rotate=function(fromImage, toImage){
	var iSrc = fromImage-1;
	var iDst = toImage-1;
	
	var imgSrcObj=this.imgs[iSrc].src;
	var imgDestObj=this.imgs[iDst].src;
	
	this.imgs[iSrc].src = imgDestObj;
	this.imgs[iDst].src = imgSrcObj;

	document.getElementById(this.imgName+fromImage).src = this.imgs[iSrc].src;
	document.getElementById(this.imgName+toImage).src = this.showBig(this.imgs[iDst].src);
};


dw_Rotator.prototype.showBig=function( imagestr ) {
	var idx = imagestr.lastIndexOf('.');
	return (imagestr.substring(0, idx) + "_b" + imagestr.substring(idx, imagestr.length));
};

/*
dw_Rotator.prototype.reDraw=function(){
	for(var i=0;i<this.imgs.length;i++){
		var imgObj=this.imgs[i];
		if(i == (this.imgs.length-1)) {
			document.getElementById(this.imgName+(i+1)).src = this.showBig(imgObj.src);
		}else {
			document.getElementById(this.imgName+(i+1)).src = imgObj.src;
		}
	}
};
*/