//alert( "height -->" + screen.availHeight);
//alert( "width -->" + screen.availWidth);
//570,800
//738,1366
function switch_style ( )
{

 var oo =document.getElementsByTagName("link")

        var i, link_tag ;
        var enableCss = "",disableCss ="";
      
        if(screen.availWidth <= 1024)
         {
            enableCss = "style/main_lower.css";
            
         }
          else
           {
              enableCss = "style/layout.css";
             
           }
  for (i = 0, link_tag = document.getElementsByTagName("link") ; i < link_tag.length ; i++ ) 
  {
   
    if ( link_tag[i].rel.indexOf( "stylesheet" ) != -1  )   
    {
          
        if(link_tag[i].title == "abc"  )
       {
                link_tag[i].href =  enableCss
                break;
        
        }//End if
            
    }//End if
    
 }

}//End func
 
 //alert('going to call');
switch_style();