var timerlen = 5;
var slideAniLen = 250;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();
var lastslide = 0;

function slidedown(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.height != "138px")
                return; // cannot slide down something that is already visible

        moving[objname] = true;
        dir[objname] = "down";
		
		document.getElementById(objname + '_more').style.display = 'none';
		document.getElementById(objname + '_close').style.display = 'block';
		document.getElementById(objname + '_close_top').style.display = 'block';
		
		document.getElementById('article-container_' + objname).className = 'article-container open';
		
        startslide(objname);
		
		if (lastslide != 0) { 
		slideup(lastslide);
		}
		
		lastslide = objname;

}

function slideup(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.height == "138px")
                return; // cannot slide up something that is already hidden

        moving[objname] = true;
        dir[objname] = "up";
		
		
		
        startslide(objname);
}

function startslide(objname){
        obj[objname] = document.getElementById(objname);

		var ie7=document.all && window.XMLHttpRequest && !window.opera;

		var targetheight = parseInt(((document.getElementById('news_footer_' + objname).offsetTop + 38) - (obj[objname].offsetTop)) - 138);
			
		if( ie7 ){ targetheight = targetheight + 20; }

        endHeight[objname] = targetheight;
	
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
                obj[objname].style.height = obj[objname].style.height;
        }

        timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}

function slidetick(objname){
        var elapsed = (new Date()).getTime() - startTime[objname];

        if (elapsed > slideAniLen)
                endSlide(objname)
        else {
                var d =(Math.round(elapsed / slideAniLen * (endHeight[objname]))) + 138;
                if(dir[objname] == "up")
                        d = endHeight[objname] - d + 138;

				if (d > 138) { 
                obj[objname].style.height = d + "px"; }
        }
		
	

        return;
}

function endSlide(objname){
        clearInterval(timerID[objname]);

        if(dir[objname] == "up") { obj[objname].style.height = "138px"; 
		
		document.getElementById(objname + '_more').style.display = 'block';
		document.getElementById(objname + '_close').style.display = 'none';
		document.getElementById(objname + '_close_top').style.display = 'none';
		document.getElementById('article-container_' + objname).className = 'article-container closed';
		
		} else { obj[objname].style.height = parseInt(endHeight[objname]) + 138 + "px"; }

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}