function getAbsoluteHeight(id_0,id_1,id_2){
	var offsetheight=20;
	var heit=0;
	var ids = new Array();
	ids[0]=id_0;
	ids[1]=id_1;
	ids[2]=id_2;
		
	for(var i=0;i<3;i++){
		var obj='';
		var objWidth=0;
		var objHeight=0;
		
		if(window.opera){
			obj = document.getElementById(ids[i]);
			if(obj.offsetHeight)objHeight = obj.offsetHeight;
		
		}else if(document.all){
			obj=document.all(ids[i]);
			if(obj.clientHeight)objHeight = obj.clientHeight;

		}else if(document.getElementById){
			obj=document.getElementById(ids[i]);
			if(obj.offsetHeight)objHeight = obj.offsetHeight;

		}else if(document.layers){
			if(document.layers[ids[i]].clip.height)objHeight= document.layers[ids[i]].clip.height;
		}
		heit += objHeight;
	}
	
	if(heit==0)heit=370;
	heit += offsetheight;
	//alert('insert margin\n<div style="height:'+heit+'px;"></div>');
	document.write('<div style="height:'+heit+'px;"></div>');
}