function DarkenPage()
{
    var page_screen = document.getElementById('page_screen');
//    page_screen.style.height = document.body.parentNode.scrollHeight + 'px';
page_screen.style.height = document.body.scrollHeight + 'px';
    page_screen.style.display = 'block';
}

// this function removes the dark screen and the page is light again
function LightenPage()
{
    var page_screen = document.getElementById('page_screen');
    page_screen.style.display = 'none';
	var MaObjContainer = document.getElementById("DivImageContainer")
	MaObjContainer.innerHTML = "";
//	MaObjContainer.style.display="none"
}

function ShowBigImage(URLs){
	DarkenPage();
	URLs = URLs.replace("Small","Large");
	URLs = URLs.replace("small","large");
	//var MaObjContainer = document.createElement("Div");
//	MaObjContainer.setAttribute ("LargeImageContainer","id");
//	document.body.appendChild(MaObjContainer);
	var MaObjContainer = document.getElementById("DivImageContainer")
	var ObjVal = "<table border='1' cellpadding='0' cellspacing='2' bordercolor='#999999'><tr><td bgcolor='#FFFFFF'><img src='"+URLs+"' onclick='LightenPage();' border='0' style='cursor:hand'></td></tr></table>"
	MaObjContainer.style.position="absolute"
	MaObjContainer.style.left = (screen.width/2)-300;
	MaObjContainer.style.top = document.body.scrollTop+((screen.height/2)-320)
	MaObjContainer.innerHTML = ObjVal;
	
}