function onhover( image )
{
	image.src = image.src + '&hover=1';
}

function outhover( image )
{
	image.src = image.src.substring( 0, image.src.length - 8 );
}


function open_pop_up(nHeight, nWidth, szURL, bHasScrollBars, bCentered)
{
	var m_oPopUpWnd = null;
	var n_w = 0, n_h = 0; 
	var n_x = 0, n_y = 0;
	var szResizable = null
	var szScrollBars  = null;

	szResizable = szScrollBars = "no";
	n_w = (nWidth < window.screen.availWidth) ? nWidth : window.screen.availWidth;
	n_h = (nHeight < window.screen.availHeight) ? nHeight : window.screen.availHeight;
	if((nWidth >= window.screen.availWidth)||(nHeight >= window.screen.availHeight))
		szResizable = "yes";		
	n_x = ((window.screen.availWidth) - n_w) / 2; 
	n_y = ((window.screen.availHeight) - n_h) / 2;
	
	if(m_oPopUpWnd)
		if(!(m_oPopUpWnd.closed))
			m_oPopUpWnd.close();
	m_oPopUpWnd = null;
	
	if(bHasScrollBars)
		szScrollBars = "yes";
		
	if(bCentered)
		m_oPopUpWnd = window.open(szURL, "_blank", "left=" + n_x + ",top=" + n_y + ",resizable=" + szResizable + ",scrollbars=" + szScrollBars + ",menubar=no,location=no,toolbar=no,status=no,width=" + n_w + ",height=" + n_h);
	else 
		m_oPopUpWnd = window.open(szURL, "_blank", "resizable=" + szResizable + ",scrollbars=" + szScrollBars + ",menubar=no,location=no,toolbar=no,status=no,width=" + n_w + ",height=" + n_h);
	m_oPopUpWnd.focus();			
}