function Get_Content_Height() { 

		var total_height = 105;
		
		var windowHeight=0;
		if ( typeof( window.innerHeight ) == 'number' ) {
			 windowHeight = window.innerHeight;
			 windowHeight = windowHeight - 5; 
		}	else {
			 if ( document.documentElement && document.documentElement.clientHeight ) {
				  windowHeight = document.documentElement.clientHeight;
			 }	else {
				  if ( document.body && document.body.clientHeight ) {
					   windowHeight = document.body.clientHeight;
				  }
			 }
		}
 
	 var section_height = windowHeight - total_height;  
	 if ( section_height < 0 ){	
		  section_height = 0;	
		}
		
	 document.getElementById('main_content').style.height = section_height + "px"; 

}