function show_img(img_addr){
	var y = getScrollY()+20+'px auto';
	document.getElementById("big_pic").src = img_addr;
	document.getElementById("show").style.display = 'inline';
	document.getElementById("player").style.display = 'none';
	document.getElementById("show_img").style.margin = y;
}
function close_img(){
	document.getElementById("show").style.display = 'none';
	document.getElementById("player").style.display = 'block';
}
function getScrollY() {
	var scrOfX = 0, scrOfY = 0;

	if( typeof( window.pageYOffset ) == 'number' ) {
		//Netscape compliant
		scrOfY = window.pageYOffset;
		scrOfX = window.pageXOffset;
	} else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
		//DOM compliant
		scrOfY = document.body.scrollTop;
		scrOfX = document.body.scrollLeft;
	} else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
		//IE6 standards compliant mode
		scrOfY = document.documentElement.scrollTop;
		scrOfX = document.documentElement.scrollLeft;
	}
	return scrOfY;
}