/*  
    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="">';
	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);
};