function toggleContent(contentID, new_style){
    if(document.getElementById){
        var content = document.getElementById(contentID);
        
        //alert(content.style.display);
        if(typeof(new_style) != "undefined"){
            content.style.display = new_style;
            return;
        }
        if(content.style.display == "block" || content.style.display == ""){
            content.style.display = "none";
        }else{
            content.style.display = "block";
        }
    }
}

preload = new Array();
for (i = 1; i <= 6; i++) {
	for (ii = 1; ii <= 6; ii++) {
		preload.push(new Image().src = '/images/swap/'+i+'_'+ii+'.png');
	}
}

function exchangeSource(img_index) {
	var currentObj = document.getElementById('img6');
	var nextObj = document.getElementById('img'+img_index);
	var current = /(\d)_(\d)\.png/i.exec((currentObj.style.filter) ? currentObj.style.filter : currentObj.src);
	var next = /(\d)_(\d)\.png/i.exec((nextObj.style.filter) ? nextObj.style.filter : nextObj.src);
	var currentSrc = '/images/swap/'+next[1]+'_'+current[2]+'.png';
	var nextSrc = '/images/swap/'+current[1]+'_'+next[2]+'.png';
	
	if (currentObj.style.filter) {
		currentObj.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="'+currentSrc+'",sizingMethod="scale")';
	}
	else { currentObj.src = currentSrc; }
	if (nextObj.style.filter) {
		nextObj.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src="'+nextSrc+'",sizingMethod="scale")';
	}
	else { nextObj.src = nextSrc; }
}

function addClass(obj, cls){
    if(obj.className){
        obj.className = "";
    }else{
        obj.className = cls;
    }
}