function event_disable(){
var ev_link = document.all.ev_link;
var ev_smins = document.all.ev_smins;
var ev_shrs = document.all.ev_shrs;
var ev_fmins = document.all.ev_fmins;
var ev_fhrs = document.all.ev_fhrs;
var ev_price = document.all.ev_price;
var ev_category = document.all.ev_category;
var ev_description = document.all.ev_description;
var ev_day = document.all.ev_day;
var ev_month = document.all.ev_month;
var ev_year = document.all.ev_year;


if(document.all.ev_venue.value=='empty'){
	ev_link.disabled=true;
	ev_day.disabled=true;
	ev_month.disabled=true;
	ev_year.disabled=true;
	ev_smins.disabled=true;
	ev_shrs.disabled=true;
	ev_fmins.disabled=true;
	ev_fhrs.disabled=true;
	ev_link.disabled=true;
	ev_price.disabled=true;
	ev_category.disabled=true;
	ev_description.disabled=true;
	}
}

function event_enable(){
var ev_link = document.all.ev_link;
var ev_smins = document.all.ev_smins;
var ev_shrs = document.all.ev_shrs;
var ev_fmins = document.all.ev_fmins;
var ev_fhrs = document.all.ev_fhrs;
var ev_price = document.all.ev_price;
var ev_category = document.all.ev_category;
var ev_description = document.all.ev_description;
var ev_day = document.all.ev_day;
var ev_month = document.all.ev_month;
var ev_year = document.all.ev_year;

if(document.all.ev_venue.value!='empty'){
	ev_link.disabled=false;
	ev_day.disabled=false;
	ev_month.disabled=false;
	ev_year.disabled=false;
	ev_smins.disabled=false;
	ev_shrs.disabled=false;
	ev_fmins.disabled=false;
	ev_fhrs.disabled=false;
	ev_link.disabled=false;
	ev_price.disabled=false;
	ev_category.disabled=false;
	ev_description.disabled=false;
	}
}

function enlarge(){
	document.getElementsByTagName("table")[0].style.width = "400px";
}

function submit(ele){
	document.all.ele.submit();
}

function validate_event(){
	val_times(1,1);
	val_times(1,2);
	if(val_times(2,1) && val_times(2,2)){
		document.all.regInfo.submit();
	}
}

function val_times(x,y){
	//        Y = 1 = START TIMES
	if(y==1){
		var ln = new Array();
		ln[1] = document.all.ev_smins.value;
		ln[2] = document.all.ev_shrs.value;
	}
	//        Y = 2 = FINISH TIMES
	if(y==2){
		var ln = new Array();
		ln[1] = document.all.ev_fmins.value;
		ln[2] = document.all.ev_fhrs.value;
	}
	//        X = 1 = TEXT RESPONSE
	if(x==1){
		if(ln[1].length==2 && ln[2].length==2){
			if(ln[2]<25 && ln[1]<61){
				var sw="ok";
				var cn=1;
			}else{
			var sw="invalid times";
			var cn=0;
			}
		}else{
			var sw="invalid times";
			var cn=0;
		}
		warn(sw, cn, y);
	}
	//        X = 2 = BOOLEAN RESPONSE
	if(x==2){
		if(ln[1].length==2 && ln[2].length==2){
			if(ln[2]<25 && ln[1]<61){
				return true;
			}else{
				return false;
			}
		}else{
			return false;
		}
	}
}

function warn(sw, cn, tn){
	var col = new Array();
		col[0] = "red";
		col[1] = "green";

	var tg = new Array();
		tg[1] = document.all.stnotice;
		tg[2] = document.all.ftnotice;
	
	tg[tn].innerHTML=sw;
	tg[tn].style.color=col[cn];
}