function gogo(){var D=0;var B=document.forms.search_engine.dal_dd;var L=document.forms.search_engine.dal_mm;var E=document.forms.search_engine.dal_yyyy;var I=document.forms.search_engine.al_dd;var F=document.forms.search_engine.al_mm;var A=document.forms.search_engine.al_yyyy;var J=parseFloat(B.value)+"/"+parseFloat(L.value)+"/"+parseFloat(E.value);var K=parseFloat(I.value)+"/"+parseFloat(F.value)+"/"+parseFloat(A.value);var G=parseFloat(E.value+L.value+B.value);var H=parseFloat(A.value+F.value+I.value);today=new Date();var C=parseFloat(today.getYear()+""+(today.getMonth()+1)+""+today.getDate());if(!(E.value+L.value+B.value=="")){if((G.toString()==(E.value+L.value+B.value).toString())){if(!isDate(J,"ddmmyyyy","C")){alert("Invalid date of starting period!");B.focus();D=D+1}}else{alert("Invalid date of starting period!");B.focus();D=D+1}}if(!(A.value+F.value+I.value=="")){if((H.toString()==(A.value+F.value+I.value).toString())){if(!isDate(K,"ddmmyyyy","C")){alert("Invalid date of starting period!");I.focus();D=D+1}}else{alert("Invalid date of ending period!");I.focus();D=D+1}}if(G>H){alert("Date of ending period not before than starting date!");I.focus();D=D+1}if(C>G){alert("Date of starting period not before than current date!");I.focus();D=D+1}if(D==0){document.forms.search_engine.submit()}};