function harvest_submit_handler(){
				var ccs=document.forms.harvest_submit_form.ch_cat_sub.value;
				var p1=ccs.indexOf("_");
				var p2=ccs.indexOf("_",p1+1);
				var ch,cat,scat;
				if (p1<0) {ch=ccs;cat=-1;scat=-1;}
				else if ( (p1>=0) && (p2<0) ) {ch=ccs.substring(0,p1);cat=ccs.substr(p1+1);scat=-1;}
				else {ch=ccs.substring(0,p1);cat=ccs.substring(p1+1,p2);scat=ccs.substr(p2+1);}
				document.forms.harvest_submit_form.channelid.value=ch;
				document.forms.harvest_submit_form.categoryid.value=cat;
				document.forms.harvest_submit_form.subcategoryid.value=scat;
				return true;
				}