function addOp(elid)
{
	if(document.getElementById(elid)) {
		items = document.getElementById(elid).getElementsByTagName("img");
		for(i=0;i<items.length;i++)
		{
			items[i].style.opacity = 0.4;
			items[i].style.filter = 'alpha(opacity=' + 40 + ')';
			items[i].onmouseover = function()
			{
				this.style.opacity = 1;
				this.style.filter = 'alpha(opacity=' + 100 + ')';
			}
			items[i].onmouseout = function()
			{
				this.style.opacity = 0.4;
				this.style.filter = 'alpha(opacity=' + 40 + ')';
			}
		}
	}
}