I need some help on how can i get the actual width of my Image when everytime i click.

supposed the actual width of my image is 150x150

i want that when i am going to click in each image in the list ,it will alert the widh of the image which is 150.can you help me please on this.Thank you in advance.

<!DOCTYPE html>

    <meta charset="utf-8"/>
	<style type="text/css">
	  .rembull ul{
	    list-style: none;
	  ul img{
	    width: 80px;
	    background: #555555;
		width: 100%;
		height: 100%;
		position: absolute;
		border: 1px solid blue;
		top: 0;
		left: 0;
		z-index: 10;
		opacity: 0.7;
	    display: none;
	    background: yellow;
	    position: relative;
		left:  300px;
		bottom: 300px;
		width: 150px;
		height: 250px;
		display: none;
		z-index: 100;
		-webkit-box-shadow: -1px 10px 5px rgba(50, 50, 50, 0.75);
		-moz-box-shadow:    -1px 10px 5px rgba(50, 50, 50, 0.75);
		box-shadow:         -1px 10px 5px rgba(50, 50, 50, 0.75); 
	    <div class="rembull">
		   <ul id="pic">
			   <li><img src="image/pic-1.jpg"/></li>
			   <li><img src="image/pic-2.jpg"/></li>
			   <li><img src="image/pic-3.jpg"/></li>
			   <li><img src="image/pic-4.jpg"/></li>
		<div id="bodycontainer"> 
			<div id="zoomout">
		 var pic, items,zoom;
	     var bodycont;
		 pic = document.getElementById("pic");
		 items = pic.getElementsByTagName("li");
	     var i=0;
		 var itemslen,you;
			 if(e.target.tagName === "IMG")
				  bodycont =  document.getElementById("bodycontainer"); 
				  zoom  =  document.getElementById("zoomout"); 
				  var img = document.createElement("img");
				  img.src = e.target.src;
                                  var wid = img.src.offsetwidth;