/*  
    dw_random.js - random image rotation - version date: May 2005
    requires dw_rotator.js 
*/

/*************************************************************************
    This code is from Dynamic Web Coding at dyn-web.com
    Copyright 2001-5 by Sharon Paine 
    See Terms of Use at www.dyn-web.com/bus/terms.html
    regarding conditions under which you may use this code.
    This notice must be retained in the code as is!
*************************************************************************/
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,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+'"';imgStr+=(typeof w=="number")?' width="'+w+'"':'';imgStr+=(typeof h=="number")?' height="'+h+'"':'';imgStr+=' alt="" border=0>';
		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);
	};