function sbar(st){st.style.backgroundColor='#f6f6f6';}
function cbar(st){st.style.backgroundColor='';}
function myopen(url){
xposition=0;yposition=0;
xposition=(screen.width-518)/2;
yposition=(screen.height-320)/2;
theproperty="width=518,height=320,resizable=1,scrollbars=1,status=0,titlebar=0,toolbar=0"
+"screenx="+xposition+",screeny="+yposition+",left="+xposition+",top="+yposition;
newwin=window.open(url,'',theproperty);}