function removeAllOptions(selectbox)
{			
		var i;		
		for(i=selectbox.options.length-1;i>=0;i--)
		{
			selectbox.remove(i);
		}
}

function addOption(selectbox,text,value)
{	
		var optn = document.createElement("OPTION");
		optn.text = text;
		optn.value = value+"_"+text;		
		selectbox.options.add(optn);
}

function validateNumber(formName,fieldName,msg){


var	doc = "document."

a=eval(doc+formName+"."+fieldName)
fieldValue=eval(doc+formName+"."+fieldName + ".value")
if (fieldValue.length<1)
{
	alert(msg)
	eval(doc+formName+"."+fieldName + ".select()")
	return false
}

chk1="1234567890";

	for(i=0;i!=fieldValue.length;i++)
	{
		ch1=fieldValue.charAt(i);
		rtn1=chk1.indexOf(ch1);
		if(rtn1==-1)
		{
			alert(msg);
			eval(doc+formName+"."+fieldName + ".focus()")
			return false;
			break;
		}
	}

return true	
}