Newbie, problem with parse error unexpected T_CONSTANT_ENCAPSED_STRING

[eluser]The Beginner[/eluser]
Still missing?hj%^&*()_

Code:

$arr[$counter] = "\"<div style=\"height:700px; width:700px;background-color: rgb(256,256,256);
                    \"><img  /></div>\"";            
                }