Drag and Drop Problem

I have created an id card template using svg and php...The template consists of 2 images namely a back ground image and an image which acts as a place holder to be replaced with the picture of the user..i am able to replace the image in that particular location but unable to drag that image to a particular point i need.There are many drop and drag scripts but not for <image>.Can anyone help me in dragging that image to any desired location???