// JScript source code
// Implement By: Elham Esmaieli
// Date: 11 Jan 2009

var DragId = "";
var OffsetY = 0;
var OffsetX = 0;

function startDrag(id) {
    DragId = id; 
    OffsetY = event.clientY - (document.getElementById(DragId).style.top).replace("px","");
    OffsetX = event.clientX - (document.getElementById(DragId).style.left).replace("px","");    
}

function mouseMove() {
    if (DragId != "") {
        document.getElementById(DragId).style.top = (event.clientY - OffsetY) + "px";
        document.getElementById(DragId).style.left = (event.clientX - OffsetX) + "px";
        document.selection.empty();
    }
}

function endDrag() {         
    DragId = "";
}