function swap(tag){var tagArray=Array();var t,tag,t1,i,content;var present=false;t=document.getElementById("id_tags");tag=document.getElementById(tag);t1=tag.innerHTML;t2=t1.toLowerCase();tagArray=t.value.split(",");if(tagArray[0]===""){tagArray.splice(0,1);}
for(i=0;i<tagArray.length;i++){if(tagArray[i].toLowerCase()==t2){tagArray.splice(i,1);tag.className="tag";i-=1;present=true;}}
if(!present){tagArray.push(t1);tag.className="selected";}
content=tagArray.join(",");t.value=content;t.focus();}