How to use Bootstrap to achieve image pop-up and enlargement

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<img  alt="How to use Bootstrap to achieve image pop-up and enlargement" >" onclick="javascript:showHow to use Bootstrap to achieve image pop-up and enlargement('<?php  echo $v[&#39;pic_detail&#39;];?>');" /></center>
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             <button></button>
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//显示大图    
   function showHow to use Bootstrap to achieve image pop-up and enlargement(source)
     {
         $("#ShowImage_Form").find("#img_show").html("<how to use bootstrap achieve image pop-up and enlargement></how>");
         $("#ShowImage_Form").modal();
     }