var strMainURL;
	function saveMainImage()
	{
		objMainImage = document.getElementById ('portfolio_main');
		strMainURL = objMainImage.src;
	}
	function mouseOver (n) {
		 var objMainImage = null, objSubImage = null, capMain = null, capSub = null, strMainURL = "", strSubURL = "", strMainTitle = "", strSubTitle = "";
		objMainImage = document.getElementById ('portfolio_main');
		objSubImage = document.getElementById ('portfolio_' + n);
		if (objMainImage != null && strSubURL != null) {
			strMainURL = objMainImage.src;
			strSubURL = objSubImage.src;
/*			strMainURL = strMainURL.replace ('_m', '_t'); */
			strSubURL = strSubURL.replace ('_t', '_m');
			document.getElementById ('portfolio_main').src = strSubURL;
/*			document.getElementById ('portfolio_' + n).src = strMainURL; */
			capMain = document.getElementById('caption_main');
			subMain = document.getElementById('caption_' + n);
			capMain.style.display = 'none';
			capMain.style.visibility = 'hidden';
			subMain.style.display = 'block';
			subMain.style.visibility = 'visible';
		}
	}
	
		function mouseOut (n) {
		objSubImage = null, strSubURL = "", strMainTitle = "", strSubTitle = "";
		objMainImage = document.getElementById ('portfolio_main');
		objSubImage = document.getElementById ('portfolio_' + n);
		if (objMainImage != null && strSubURL != null) {
			document.getElementById ('portfolio_main').src = strMainURL;
/*			document.getElementById ('portfolio_' + n).src = strMainURL; */
			capMain = document.getElementById('caption_main');
			subMain = document.getElementById('caption_' + n);
			capMain.style.display = 'block';
			capMain.style.visibility = 'visible';
			subMain.style.display = 'none';
			subMain.style.visibility = 'hidden';
		}
	}