function isNumberInput(field,event)//checks that only numbers are entered in the field
		{
			var key, keyChar;
			if (window.event)
				key = window.event.keyCode;
			else if (event)
				key = event.which;
			else 
				return true;
			//Check for special characters like backspaces
			if ((key==null) || (key==0) ||(key ==8) || (key == 13) || (key == 27))
			return true;
			//check to see if its a number
			keyChar = String.fromCharCode(key);
			if(/\d/.test(keyChar)){
					window.status = "";
					return true;
			}else{
					window.status = "Field accepts numbers only"
					return false;
			}	
	}	
	

function echeck(str) {

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    return false
		 }

 		 return true					
	}