function getpkAirHeight(){
	var table_border = 0;
	var TB = document.getElementById('tb0_air');
  
	var arrTRS = TB.getElementsByTagName("tr");
	var tableHeight = 0;
	var tmpMaxLen = 0;
	var couter = 0;
	if(arrTRS != null){
	 	couter = (arrTRS.length-2)/2;		  
	}
	
	if(couter>5){	
		if(couter >10) couter = 10;
		tableHeight = couter*(Number(arrTRS[2].height)+7);		
	}else{
		tableHeight = 154;
	}		
	//if(tableHeight>200) tableHeight = 200;
	return tableHeight;
}