function open_win(pic,type)
{
	if(type==1)
		window.open(pic,"big_pic","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=yes, copyhistory=yes, width=400, height=528");
	else if(type==2)
		window.open(pic,"big_pic","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=yes, copyhistory=yes, width=528, height=400");
	else if(type==3)
		window.open(pic,"big_pic","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=yes, copyhistory=yes, width=700, height=528");
	else if(type==4)
		window.open(pic,"big_pic","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=yes, copyhistory=yes, width=647, height=460");
	else if(type==5)
		window.open(pic,"big_pic","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=yes, copyhistory=yes, width=746, height=460");
	else
	{
		alert("Larger image not available.");
		return false;
	}

}