function main_height()
{
	var col = document.getElementsByTagName("div");
	for (var i = 0; i < col.length; i++)
	{
		if(col[i].className.indexOf('block') != -1)
		{
			var _h = col[i].offsetHeight;
			var hold = col[i].getElementsByTagName("div");
			for( var j = 0 ; j < hold.length ; j++)
				if( hold[j].className.indexOf('box-holder') !=-1)
				{
					hold[j].style.minHeight = _h - 1 +'px';
					if (window.attachEvent && !window.opera){ hold[j].style.height = _h - 1+ 'px'; }
				}
				
		}
	}
}

if (window.addEventListener){
	window.addEventListener("load", main_height, false);
}
else if (window.attachEvent && !window.opera){
	window.attachEvent("onload", main_height);
}