The below JavaScript disables HTML tags in my Blog[www.gadgetcage.com] posts. How to enable HTML tags?

Here's the code for review:
function removeHtmlTag(strx,chop){
   if(strx.indexOf("<")!=-1)
   {
      var s = strx.split("<");
      for(var i=0;i<s.length;i++){
         if(s.indexOf(">")!=-1){
            s = s.substring(s.indexOf(">")+1,s.length);
         }
      }
      strx =  s.join("");
   }
   chop = (chop < strx.length-1) ? chop : strx.length-2;
   while(strx.charAt(chop-1)!=' ' && strx.indexOf(' ',chop)!=-1) chop++;
   strx = strx.substring(0,chop-1);
   return strx+'...';
}

function createSummaryAndThumb(pID){
   var div = document.getElementById(pID);
   var imgtag = "";
   var img = div.getElementsByTagName("img");
   var summ = summary_noimg;
   if(img.length>=1) {   
      imgtag = '<span style="float:center; padding:0px 10px 5px 0px;"><img src="'+img[0].src+'" width="'+img_thumb_width+'px" height="'+img_thumb_height+'px"/></span>';
      summ = summary_img;
   }
   
   var summary = imgtag + '<div>' + removeHtmlTag(div.innerHTML,summ) + '</div>';
   div.innerHTML = summary;
}