xy coordinates of caret in iframe

i am trying to make a wysiwyg edi开发者_运维问答tor using iframe i want no scrollbar so text should start appearing on next line when max-width is reached .i need the caret coordinates for that please help me out here

Can't you use a container DIV tag inside iFrame with fixed width and apply word wrap as suggested in Is there a way to word-wrap long words in a div?