// ---	since the page is so image heavy, 
//		preload the background images 
//		so the page renders first and then loads the images
var tmpImg 	= new Image ();
tmpImg.src 	= '/img/gfx/coll_bkgd.gif';
var tmpImg 	= new Image ();
tmpImg.src 	= '/img/clr.gif';

function show_lamp ( pg_code ) {
	//alert ( "show_lamp ( pg_code:" + pg_code + " )" );
	oCont 	= document.getElementById ( "lamp_container" );
	oPg 	= document.getElementById ( "lamp_pg" );
	oIfr 	= document.getElementById ( "lamp_ifr" );
	if ( !window.XMLHttpRequest ) { // this condition is to fix IE6
		oCont.style.position 	= "absolute";
		oCont.style.top 		= ( document.documentElement.scrollTop -20 ) +"px";
		oCont.style.background 	= "#eee";
		window.onscroll = function () {
			oCont.style.top 	= ( document.documentElement.scrollTop -20 ) + "px";
		}
	}
	oCont.style.display 	= "block";
	oIfr.src 				= "hilight_detail.php?pg_code=" + pg_code;
}
function hide_lamp () {
	//alert ( "hide_lamp ()" );
	document.getElementById ( "lamp_container" ).style.display 	= "none";
	document.getElementById ( "lamp_ifr" ).src 					= "";
}