it happens more frequent when I want to search a bookmarklet using url bar this way is always reproducible for example save a bookmarklet and name it get images then type get in url bar and firefox crashes bookmarklet example : javascript:(function(){s='<script%20type="text/javascript">function%20displayLink()%20{%20str="Links<br/>";%20chkBoxes%20=%20document.getElementsByName("chkImage");%20for(var%20i=0;i<chkBoxes.length;i++)%20{%20if(chkBoxes[i].type%20==%20"checkbox")%20{%20if(chkBoxes[i].checked%20==%20true)%20{%20str+=%20"<a%20href="+getImgURL(chkBoxes[i].id)+">"+getImgURL(chkBoxes[i].id)+"</a><br/>";}}}%20document.getElementById("divLink").innerHTML%20=%20str;%20}%20function%20getImgURL(txt)%20{i%20=%20txt.indexOf("imgurl");if%20(i%20>%200)%20{if%20(txt.indexOf("&",i)%20>%200)%20txt%20=%20txt.substring(i+7,txt.indexOf("&",i));else%20if%20(txt.indexOf("%26",i)%20>%200)%20txt%20=%20txt.substring(i+7,txt.indexOf("%26",i));}return%20txt;}</script><style>.width{float:left;width:23%;max-height:25%;border-style:dotted;border-width:thin;margin:2px}%20.width%20img%20{%20max-width:90%;%20max-height:100%;%20padding:5px;%20margin:auto;%20vertical-align:text-top}</style>';%20s+='<div%20id="divLink"%20style="width:80%;height:180px;position:fixed;background-color:white;overflow:auto;border-style:solid;border-width:medium;margin:5px;padding:5px;">Links</div><div%20style="height:200px"></div>';%20cnt%20=%200;%20for%20(i=0;i<document.images.length;i++)%20{%20if(document.images[i].src%20==%20''%20||%20document.images[i].width<30%20||%20document.images[i].height<30)%20continue;%20if(cnt++%20%%204==0){s+='<div%20style="clear:%20both"></div>'%20};imgURL=document.images[i].src;if(document.images[i].parentNode.tagName%20==%20'A')%20{refImg=decodeURIComponent(document.images[i].parentNode.href);if(refImg.indexOf("imgurl")>0)%20imgURL=refImg;}%20s+='<div%20class="width"><input%20type="checkbox"%20name="chkImage"%20id="'+imgURL+'"%20onchange="displayLink()"/><img%20src="'+document.images[i].src+'"></div>';};if(s!=''){document.open("text/html");