sort tick array by timestamps in javascript

[stylpen]

my ajax responses take waaaay too long to arrive. that is why i get something like if the data gets sortet it won't draw circles

[stylpen]

looks better now with setInterval replaces by setTimeout (really only new data come in - reduced load on pi by 400% in my case but so too slow). Something strange is stil happening: looks like there are 3 (or 4) points inserted in the wrong order

[stylpen]

trying http://stackoverflow.com/questions/5435228/sort-an-array-with-arrays-in-it-by-string ...