How to Change an image’s width dynamically from Javascript

How to Change an image’s width dynamically from Javascript. Using DOM we can do this.

function changeImgSize(objectId,newWidth,newHeight) {
imgString = 'theImg = document.getElementById("'+objectId+'")';
eval(imgString);
oldWidth = theImg.width;
oldHeight = theImg.height;
if(newWidth>0){
theImg.width = newWidth;
}
if(newHeight>0){
theImg.height = newHeight;
}
}

Note: this one i found on the web but i can’t remember where i found. Credits to the author.

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