i've created a block which it use fopen to open a html file then get the content through stream_get_line.
it does display out the page with all the links functioning.

but problem came after i enable another block in the same region. the block i created shows at below of other block. i've drag my own block to the top in the region list..but it still appear below other block.

how can i make my own block not interfere by other block?