function checkForSrollbar() {
	var frame_element = document.getElementById("main-iframe"); 
	var frame_window  = document.frames["main-iframe"]; 
	if(frame_element.offsetHeight < frame_window.document.body.scrollHeight) {  
		return true; //alert("Needs scrollbar"); 
	}else{
		return false; //alert("Doesn't Need scrollbar");
	}
}

function resizeIframe() {
	var client_height = parent.top.document.body.clientHeight;
	var client_width = parent.top.document.body.clientWidth;
	
	document.getElementById("main-iframe").style.height = parseInt(client_height-174);
	document.getElementById("main-iframe").style.width = parseInt(client_width-448);
	
}