How show image in image viewer using java script

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Javascript

PHP

hi,I am using php first time, i want to open image in image viewer instead of browser by using javascript only. please help...
here i wrote down what i tried

What I have tried:

this is html code in Php page

echo "<div style = 'text-align:center;width:200px;'>"	;
				echo "<div height = '175px;'>";
				echo "<img  src='..".$row["FilePath"]."/".$row["FileName"]."' width ='200px' height = '175px' style ='float:left;' onclick='image(this)' ></img>";
				echo "</div>";
				echo "<p width = '200px'> ".$row["filetitle"]." </p>";
				echo "</div>";
				echo "</td>";

and this is javascript function which open image in new tab

<script type="text/javascript">
function image(img) {
    var src = img.src;
	window.open(src);
	
	
}
</script>

but i want open image in image viewer please help