var minIcon="../images/icon_portlet_minimize.gif";
var maxIcon="../images/icon_portlet_maximize.gif";		 		
var minTitle="Minimize"
var maxTitle="Maximize"	
function showHideContentDiv(contentDiv,imgID)
{
	var elem = document.getElementById(contentDiv);
	if (elem)
	{
		if (elem.style.display == 'none') // 隐藏的显示
		{
			elem.style.display = 'block'; // 以块对象显示
			
			var elemMin = document.getElementById(imgID);
			elemMin.src=minIcon;
			elemMin.title=minTitle;		
		} 
		else 							// 显示的隐藏
		{
		    elem.style.display = 'none';
			
			var elemMax = document.getElementById(imgID);
			elemMax.src=maxIcon;
			elemMax.title=maxTitle;			
		}
	}
}