function openWindow(openurl)
{
	var winheight=500;
	var winwidth=780;
	var x=(screen.height-winheight)/2;
	var y=(screen.width-winwidth)/2;
	var theopenwindow;
	theopenwindow=window.open(openurl,"newwin","height="+winheight+" ,width="+winwidth+",top="+x+",left="+y+",scrollbars=yes");
	theopenwindow.focus();
}