var window_top;
var window_left;
var new_window;

function window_open(page,name,width,height){
	window_left=eval("(screen.availWidth-"+width+")/2-15");
	window_top=eval("(screen.availHeight-"+height+")/2-20");
	new_window=window.open(page,name,'width='+width+',height='+height+',top='+window_top+',left='+window_left+',toolbar=0,resizable=1,scrollbars=1,status=1');
	new_window.focus();
}

function window_open_with_tools(page,name,width,height){
	window_left=eval("(screen.availWidth-"+width+")/2-15");
	window_top=eval("(screen.availHeight-"+height+")/2-20");
	new_window=window.open(page,name,'width='+width+',height='+height+',top='+window_top+',left='+window_left+',toolbar=1,resizable=1,scrollbars=1,status=1');
	new_window.focus();
}