function isEmpty(obj){for(var i=0,j=obj.value,z;i<j.length;i++){z=j.substring(i,i+1);if(z!=' '){return(false);}}return(true);}
function notLen(obj,l){var i=obj.value; if(l>i.length) return(true);return(false)}
function notDate(obj){var i,j;if(isNaN(i=new Date(obj.value))) return(true);j=obj.value.split('/');if((1+i.getMonth())!=j[1]) return (true);return(false);}
function notNumber(obj){var i=parseInt(obj.value);if(isNaN(i)){return(true);}return(false);}
function notChecked(obj){for(var i=0;i<obj.length;i++){if(obj[i].checked)return(false);}return(true);}
function notMail(obj){var reg=/\S+\.*\S+@\S+\.\w{2,3}\.*\S*/;if(obj.value.search(reg)==-1){return(true);}return(false);}
function notCombo(obj){if(obj.selectedIndex==0){return(true);}return(false);}