44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
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function dragContainer(elmnt) {
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var pos1 = 0, pos2 = 0, pos3 = 0, pos4 = 0;
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elmnt.onmousedown = dragMouseDown;
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function dragMouseDown(e) {
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e = e || window.event;
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pauseEvent(e);
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// get the mouse cursor position at startup:
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pos3 = e.clientX;
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pos4 = e.clientY;
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document.onmouseup = closeDragElement;
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// call a function whenever the cursor moves:
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document.onmousemove = elementDrag;
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}
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function elementDrag(e) {
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e = e || window.event;
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pauseEvent(e);
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// calculate the new cursor position:
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pos1 = pos3 - e.clientX;
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pos2 = pos4 - e.clientY;
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pos3 = e.clientX;
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pos4 = e.clientY;
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// set the element's new position:
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elmnt.style.top = (elmnt.offsetTop - pos2) + "px";
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elmnt.style.left = (elmnt.offsetLeft - pos1) + "px";
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}
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function closeDragElement(e) {
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// stop moving when mouse button is released:
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document.onmouseup = null;
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document.onmousemove = null;
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}
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function pauseEvent(e) {
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if(e.stopPropagation) e.stopPropagation();
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if(e.preventDefault) e.preventDefault();
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e.cancelBubble=true;
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e.returnValue=false;
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return false;
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}
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}
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