function TendersAdPager(){
	this.darab=0;
	this.i=1;
	this.toLeft = toLeft;
	this.toRight = toRight;
	while(1){
		if(document.getElementById('tender_ad_' + (this.darab+1))){
			this.darab++;
		}else{
			break;
		}
	}
	if(this.darab==1){
		document.getElementById('tender_ad_right').style.display = 'none';
		document.getElementById('tender_ad_left').style.display = 'none';
	}
}

function toLeft(){
	this.i = this.i-1;
		if(this.i==0){
		this.i=this.darab;
	}
	if(this.i>this.darab){
		this.i=1;
	}
	var j=0;
	for(j=1; j<=this.darab; j++){	
		if(this.i==j){
			document.getElementById('tender_ad_' + j).style.display = 'block';
		}else{
			document.getElementById('tender_ad_' + j).style.display = 'none';
		}
	}
}

function toRight(){
	this.i = this.i+1;
		if(this.i==0){
		this.i=this.darab;
	}
	if(this.i>this.darab){
		this.i=1;
	}
	var j=0;
	for(j=1; j<=this.darab; j++){	
		if(this.i==j){
			document.getElementById('tender_ad_' + j).style.display = 'block';
		}else{
			document.getElementById('tender_ad_' + j).style.display = 'none';
		}
	}
}