sliding=false;
var slideSpeed=60;
var cur_id=1;
var next_id=2;
var max_id = document.getElementById('slideBar').getElementsByTagName('div').length;

function slideLeft(){
	if(!sliding && (cur_id>1)){
		sliding=true;
		next_id=cur_id-1;
		document.getElementById('slideButPrev').className=(next_id==1)?'lai':'la';
		document.getElementById('slideButNext').className=(next_id==max_id)?'rai':'ra';
		document.getElementById('div_slide'+next_id).style.left=''+'-'+parseInt(document.getElementById('div_slide'+next_id).style.width)+'px';
		doSlideLeft();
	}
	return false;
}

function doSlideLeft(){
	oldX=document.getElementById('div_slide'+cur_id).style.left;
	oldX.replace('px','');
	newX1=parseInt(oldX)+slideSpeed;
	document.getElementById('div_slide'+cur_id).style.left=newX1+'px';
		newX2=parseInt(document.getElementById('div_slide'+next_id).style.left)+slideSpeed;
		if(newX2>0)newX2=0;
		document.getElementById('div_slide'+next_id).style.left=newX2+'px';
		if(newX2==0){
			cur_id=next_id;
			sliding=false;
		}else{
			setTimeout('doSlideLeft()',50);
		}

}

function slideRight(){
	if(!sliding && (cur_id < max_id)){
		sliding=true;
		next_id=cur_id+1;
		document.getElementById('slideButPrev').className=(next_id==1)?'lai':'la';
		document.getElementById('slideButNext').className=(next_id==max_id)?'rai':'ra';
		document.getElementById('div_slide'+next_id).style.left='765px';
		doSlideRight();
	}
	return false;
}

function doSlideRight(){
	oldX1=document.getElementById('div_slide'+cur_id).style.left;
	oldX1.replace('px','');
	newX1=parseInt(oldX1)-slideSpeed;
	document.getElementById('div_slide'+cur_id).style.left=newX1+'px';
	newX2=parseInt(document.getElementById('div_slide'+next_id).style.left)-slideSpeed;
	if(newX2<0)newX2=0;
	document.getElementById('div_slide'+next_id).style.left=newX2+'px';
	if(newX2==0){
		cur_id=next_id;
		sliding=false;
	}else{
		setTimeout('doSlideRight()',50);
	}

}