function ShowTab(id) {
	for(i=1;i<=3;i++){
		document.getElementById('td-tab'+i+'-l').style.background = "url('/content/skin/default/images/product-def-tab-l.jpg')";
		document.getElementById('td-tab'+i+'-r').style.background = "url('/content/skin/default/images/product-def-tab-r.jpg')";
		document.getElementById('td-tab'+i+'-c').style.background = '#fff';
		document.getElementById('td-tab'+i+'-c').style.borderTop = "1px solid #0099ff";
		document.getElementById('td-tab'+i+'-c-p').style.color = '#000';
		document.getElementById('product-def-description-'+i).style.display = 'none';
	
	}
	
	document.getElementById('td-tab'+id+'-l').style.background = "url('/content/skin/default/images/product-def-tab-l-act.jpg')";
	document.getElementById('td-tab'+id+'-r').style.background = "url('/content/skin/default/images/product-def-tab-r-act.jpg')";
	document.getElementById('td-tab'+id+'-c').style.background = '#0099ff';
	document.getElementById('td-tab'+id+'-c').style.borderTop = "none";
	document.getElementById('td-tab'+id+'-c-p').style.color = '#fff';
	document.getElementById('product-def-description-'+id).style.display = 'block';			
};

function loadImg (alias, ext){
	if(typeof prev_id != 'undefined'){
		document.getElementById(prev_id).className = "a_gallery";		
	}
	prev_id = alias;
	document.getElementById("imageFull").setAttribute("src", "http://www.megaopt.com/content/images/pimage/"+alias+"_image."+ext);
	document.getElementById("imgfull").setAttribute("href", "http://www.megaopt.com/content/images/pimage/"+alias+"_full."+ext);		
	document.getElementById(alias).className = "";		
	$('.a_gallery').lightBox();
}