/*  
    dw_random.js - random image rotation 
    requires dw_rotator.js 
*/
dw_RandRotator.prototype=new dw_Rotator();
function dw_RandRotator(sp,pt,bClickable,bMouse,tgt){
	this.num=dw_Rotator.col.length;
	this.name="RandRotateImg"+this.num;
	this.mouseEvs=bMouse;
	this.clickable=bClickable;
	this.rObj=dw_Rotator;
	this.rObj(this.name,sp,pt,tgt);
};

dw_RandRotator.prototype.setUpImage=function(imgAr,w,h,b,bTrans){
	this.trans=bTrans;
	this.ctr=Math.floor(Math.random()*imgAr.length);
	var img=imgAr[this.ctr];var imgStr='<img name="'+this.name+'" src="'+this.path+img+'"';
	if(w!="0") imgStr+=(typeof w=="number")?' width="'+w+'"':'';
	if(h!="0") imgStr+=(typeof h=="number")?' height="'+h+'"':'';
	imgStr+=(typeof b=="number")?' border="'+b+'"':'';
	imgStr+=' alt="">';var str="";
	if(this.clickable){
		str+='<a href="" onclick="return dw_Rotator.doClick('+this.num+')"';
		if(this.mouseEvs){
			str+=' onmouseover="dw_Rotator.pause('+this.num+')"';
			str+=' onmouseout="dw_Rotator.resume('+this.num+')"';
		}
	str+=' onfocus="this.blur()">'+imgStr+'</a>';
	}
	else{
		str=imgStr;
	}
	document.write(str);document.close();
	for(var i=0;imgAr[i];i++)this.addImages(imgAr[i]);
};

dw_RandRotator.prototype.rotate=function(){
	clearTimeout(this.timer);
	this.timer=null;
	var ctr=Math.floor(Math.random()*this.imgs.length);
	var i=0;
	while(ctr==this.ctr&&i<6){
		ctr=Math.floor(Math.random()*this.imgs.length);
		i++;
	}
	this.ctr=ctr;
	var imgObj=document.images[this.name];
	if(!imgObj||!dw_Rotator.ready)return;
	if(this.trans&&typeof imgObj.filters!="undefined"){
		imgObj.style.filter='blendTrans(duration=1)';
		if(imgObj.filters.blendTrans)imgObj.filters.blendTrans.Apply();
	}
	imgObj.src=this.imgs[this.ctr].src;
	if(this.trans&&typeof imgObj.filters!="undefined"&&imgObj.filters.blendTrans)imgObj.filters.blendTrans.Play();
	this.timer=setTimeout(this.animString+".rotate()",this.speed);
};