function DeleSpaces( str ) {
   var str1="", str2="";
   
   if ( str != "" ) {
      if ( str.lastIndexOf( " " ) == -1 )
         str2 = str;
      else {
         for ( var i = 0; i < str.length; i++ ) {
            if ( str.charAt( i ) == " " )
               continue;
            else {
               str1 = str.substring( i, str.length );
               break;
            }
         }
         for(var i = str1.length - 1; i >= 0; i-- ) {
            if(str1.charAt( i ) == " ")
               continue;
            else {
               str2 = str1.substring( 0, i + 1 );
               break;
            }
         }
      }
   }
   return str2;
}
function isChinese(val) {
	for(i = 0 ;i < val.length ;i++){
		if(val.charCodeAt(i) <  255){
			alert("真实姓名和公司名称请必须用中文填写！") ;
			return false ;
		}
	}
	
	return true ;
}
function trim(val) {
		return rtrim(ltrim(val))
	}
	function ltrim(val) {
		if(val != "") {
			for(i = 0 ;i < val.length ;i++){
				a = val.charAt(i)
				//alert(a) ;
				if(a != ' '){
					return val.substring(i) ;
				}
			}
		}
		return val; 
	}
	function rtrim(val) {
		if(val != "") {
			for(i = val.length-1 ;i >=0 ;i--){
				a = val.charAt(i)
				if(a != ' '){
					return val.substring(0,i+1) ;
				}
			}
		}
		return val; 
	}