if (document.getElementById("middlecontainer"))
{
	var contenth = document.getElementById("middlecontainer").offsetHeight;
	if(contenth<230) {
		 contenth=230; 
		  document.getElementById("middlecontainer").style.height=250+"px";
;
		 }
	var offset_ie=contenth+330;
	var offset_ff=contenth+330;	
	if (navigator.appName == "Opera"){
	document.getElementById("index_maincontainer").style.height=offset_ie;
 	document.getElementById("middlecontainer").style.height=contenth-20;
	//document.getElementById("bottomcontainer").style.height=contenth-184;
	}
	else if (document.all){
	document.getElementById("index_maincontainer").style.height=offset_ie;
 	document.getElementById("middlecontainer").style.height=contenth-20;
	//document.getElementById("main_content").style.height=contenth-20;
	//document.getElementById("bottomcontainer").style.height=contenth-184;
	}
	else 
	{
	document.getElementById("index_maincontainer").style.height=offset_ff+"px";
 	document.getElementById("middlecontainer").style.height=contenth-20+"px";
	//document.getElementById("bottomcontainer").style.height=contenth-205+"px";

	}
}